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Answer. The principle of density was discovered by the Greek scientist Archimedes. Through this experiment, you will learn about the Relative Density of a Liquid. Leakage of an oil tank in the ocean then oil drops start to float on the water due to their less density in the water. = 0.96 x 1 0 3 kg m -3 , ρ W = 1 0 3 kg m -3 Since, density of the cane is greater than the density of water, so the can will sink in water. Prepared by teachers of the best CBSE schools in India. A jeweller claims to make ornaments of pure gold of relative density 19.3. Answer: (b) unitless. Density – relative density 3. Thus, the inter-atomic separation is very small in the crystalline phase. We can bet you've heard about the Archimedes' principle at least once in your life. Density of water is 1 g cm 3. The density is defined as the mass of the body per unit volume. The unit on both numerator and denominator are the same. A. Thallophyta B. The principle of density was discovered by the Greek scientist Archimedes. Relative density (R.D.) The difference between the specific gravity and density is that at room temperature and pressure is 1gram per 1 cubic cm is the density of water this density is treated as a standard and the density of any other material (usual liquids) is calculated relative to this is called relative density or specific gravity. Every question is accompanied by detailed step by step solutions. The relative density is defined as the ratio of the substance to the ratio of the reference substance. Density is measured in the units kg/m 3. The S.I unit of density is kg/m3. 5% sintered at 1300°C for 2 h. It is clearly shown that the relative density of sintered multi-layer ceramics was increased with increasing compaction pressure. Worksheets have become an integral part of the education system. What is the pressure at the bottom of the vessel due to these liquids? Q1: A vessel 6m high is half-filled with water and then filled to the top with oil of density 0.96 g/c.c. Customer buys from him a Bangle of weight 25.25 gf. So relative density is a unitless property. The relative density is defined as the ratio of the substance to the ratio of the reference substance. Calculate the density of water if it has a mass of 1160 Kg and a volume of 1 m, If you find a shiny rock, a carbon allotrope with a volume of 0.042 cm³ and a mass of 0.14 g, is it graphite or diamond? Question. However, the SI unit of Density is measured using kilograms per cubic meter (kg/m3). • Relative density = Density of a substance/Density of water → It has no unit as it is a ratio. Answer. Solved Numericals Example 1: Relative density of gold is 19.3. Required fields are marked *, Unit Of Relative Density Is Kg M 3 1 True 2 False. In general, liquids are less dense than solids and gases are less dense than liquids. The unit on both numerator and denominator are the same. Do objects denser than water float on it ? (b) The density of a piece of brass will change by changing its size or shape. Equal volumes of different substances have different masses or weights. Also 1 m 3 of water has a weight different from that of sulphuric acid or palm oil of the same volume. Some other units include: In addition to this, in the cgs system density is measured in gram per cubic centimeter (g/cm3). Let us perform an activity to understand how this is done. The two weights are then compared. The density of a substance is the measure of how much stuff an object has in a unit volume. Density of sodium atom, ρ = It is given that the density of sodium in crystalline phase is 970 kg m –3. It is easy to calculate density if you know the formula and understand its related units. (e) Relative density of a substance is expressed in gm-3. For example, separation of oil from water. Use the density equation to solve for m, mass of graphite and for the mass of a diamond. The density of material shows the denseness of that material in a specific given area. The floating of ships and diving of submarines are due to their density difference. Iron, platinum, and lead are examples of dense materials. The specific gravity is the density of a substance divided by the density of water. 25 gram per centimetre cube Explain: (a) Railway tracks are laid on large sized wooden or iron sleepers. Your email address will not be published. Many types of rock and minerals are examples of dense material. Worksheets are very critical for every student to practice his/ her concepts. Generally, the density of water (which is approximately about 1 gram/cubic centimeter) is taken as the standard value for calculating the density of substances. > has no units — since it is the ratio of same The mass of the shiny rock you found is identical with the mass of diamond. Hence, the density of sodium atom and the density of sodium in its crystalline phase are not in the same order. Ans: The Relative density of lead is 11.3 g cm-3 => 11.3 x 103kg m-32[1 kilogram = 103g, 1 meter = 10 cm] => 11.3 x 103kg m-4 megagram (metric ton) per cubic meter (mg/m. Asked by rk2783740 31st August 2018 6:37 PM Though SI unit of density is kg/m³, for convenience we use g/cm³ for solids, g/ml for liquids, and g/L for gases. Given: h = 6 m, ρ 0 = 0.96 g/c.c. 9. Different substances have different density, which means for the same volume of different substances weigh differently. Solution: False. The symbol ρ represents it or it can also be represented by letter D. The density of material shows the denseness of that material in a specific given area. of a substance is defined as the ratio of mass of a given volume of the substance to the mass of same volume of water at 4°C. Take two boxes that have the same volume. The density of graphite is 2.266 g/cm, = 2.266 g/cm³ x 0.042 cm³ = 0.0951g for graphite. Sol. The density of graphite is 2.266 g/cm3 and the density of diamond is 3.51g/cm3. The customer then weighs The Bangle under water and find its weight what is 23.075 g with the help of suitable calculation explain the whether The Bangle is of pure gold or not. Is the weight of object and weight of water displaced by it equal ? 30. To watch all subjects full videos click here: http://bit.ly/2O1ThGK CBSE Class 9 Science Worksheet - All Chapters. For example 1 m 3 of lead weighs differently from 1 m 3 of wood. Your email address will not be published. A material’s density is defined as its mass per unit volume. Question 2. You may also want to check out these topics given below! (c) The density of a liquid decreases with increase in its temperature. The density of liquid changes with pressure as Solution: False. But do you know what it really means? The density of liquid of bulk modulus B at a depth h is given by where is the density of liquid on its surface and is the average density of liquid. Here, mass of cane, m = 600 g Volume of cane, V = 500 cm 3 Density of cane, r = 1.2 g cm 3. Fill the first box with x balls and the second box with 6x balls. of a substance is the ratio of the density of the substance to the density of water at 4°C. The opposite of dense is sparse and a few examples of sparse material are glass, bamboo, aluminum, and styrofoam. Many applications of density are there in our real-life like a few examples are in pipe design, shipbuilding, helium balloons, weight distribution in the airplane, and the fact that ice floats on water. If density of gold is 19320 kg m 3, find the relative density of the gold. Any two differences . Choose the correct unit for the relative density among the following: (a) kg/cm (b) unitless (c) kg/cm (d) kg/m 3. 1. 12. Talking about other density units, metric tons and liter are also used even though they are not part of the SI. The density is defined as the mass of the body per unit volume. If you find a shiny rock, a carbon allotrope with a volume of 0.042 cm³ and a mass of 0.14 g, is it graphite or diamond? What is Relative Density? It is a unique physical property for a particular object. This is because in solid phase, atoms are closely packed. The density of water is 1000 kg m 3. PHYSICS: THRUST, PRESSURE, ARCHIMEDES PRINCIPLE, RELATIVE DENSITY. This property of matter is called density. Watch this video to know more. How many times the substance is DENSER than water. These questions appear in books from the top publishers in India and cover the complete syllabus for ICSE Class 8 If you wish to learn more physics concepts with the help of interactive video lessons, download BYJU’S – The Learning App. ∴ density of lead = relative density of lead x density of water = 11.3 x 1 g cm-3 = 11.3 g cm-3 Also in S.I. The symbol. Relative density of an object = To find the relative density of an object, we must first weigh the object and then weigh an equal volume of water. Materials that are dense are most likely to ‘feel’ heavy or hard. Fill in the blanks by suitable conversion of units (a) 1 kg m 2 s-2 = ….g cm 2 s-2 Specific gravity is a measure of relative density. Physics SS 1 Week 8. (d) Relative density of water is 1.0. 80 gram per centimetre cube, with one centimetre of its length above it. 1. Repository of Practice Questions in Physical Quantities and Measurement chapter from Physics. 29. Density can be explained as the relationship between the mass of the substance and the volume it takes up. The density of water is 10 3 kg/m 3. CBSE Class 9 Physics Worksheet - Thrust, Pressure, Archimedes Principle, Relative Density - Practice worksheets for CBSE students. Since density of water is 1 Gcm -3, so density of a substance in Gcm -3 = relative density of substance. The box that has more balls has more mass per unit of volume. Making aluminium to float Mathematically, the density of an object is expressed as follows: Each substance has a specific density. This is due to the fact that solids have densely packed particles, liquids are materials where particles can slide around one another, and gases have particles that are free to move all over the place. 7. 2. In a qualitative term, it shows how much heavy an object is at constant volume. RELATIVE DENSITY of substance is the density compare with water i.e. Here the first box contains x number of balls and the second box contains a 6x number of balls. system density of water = 10 3 kg m-3 density of lead = 11.3 x 10 3 kg m-3 = 1.13 x 10 4 kg m-3. Required fields are marked *, The density of a substance is the measure of how much stuff an object has in a unit volume. Now that you know what Density means, it would be quite easy for you to understand what Relative Density means. Your email address will not be published. Question. Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Considering various occasions, we take in more than one object move in a frame which is non-stationary in respect to another viewer. Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, the reference is air at room temperature (20 °C or 68 °F). (d) The relative density of lead is 11.3. A) Development of immunity to small pox, memory cells are … well-known application of density is determining whether an object will float on water or not. Density is essentially a measurement of how tightly matter is packed together. What is density of water at 4°C ? Thus, Relative density = Unit of Relative Densit Since relative density is a ratio of two similar quantities, it has no unit. What is the density of gold in kg/m 3? CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions For Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, Who Is Known As The Father Of Nuclear Physics, What Are The Changes Seen In Girls At The Time Of Puberty, What Is Inexhaustible Energy With Example, What Is The Difference Between Healthy And Disease Free. Those objects which have density more than water sink in water We can also say that those having Relative Density more than 1 sink in water Example Iron floats in water because Iron has more density than water (Density of iron is 7800 kg/m 3 but water is 1000 kg/m 3 Relative Density of Iron = Density of iron/Density of Water = 7800/1000 = 7.8 We can also say that since relative density of object is more than 1, it sinks in water Q11. A hollow metal cylinder of length 10 cm floats in alcohol of density 0. Solution: True. 3. ρ is the density of liquid V is the volume of liquid displaced The thrust force is also called the buoyant force because it is responsible for objects to float. 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Of two substances helps you in separation techniques, Archimedes principle, Relative density of substance..., liquids are less dense than liquids of same Physics SS 1 8! Move in a qualitative term, it shows how much stuff an object is at volume! More balls has more mass per unit volume shiny rock you found is with... Would weigh more b ) the density of graphite and for the same order how tightly is... Make ornaments of pure gold of Relative density of a substance/Density of water is 1000 kg/m 3 which., it shows how much heavy an object is expressed in gm-3 e ) Relative density is determining an! Liter are also used even though they are not in the crystalline phase lead weighs differently from 1 m,... Are due to these liquids have become an integral part of the body per unit volume its... Cube, with one centimetre of its length above it one object in! Use g/cm³ for relative density byju's, g/ml for liquids, and lead are examples of material! Buys from him a Bangle of weight 25.25 gf to solve for m, ρ 0 = 0.96.... Water if it has no units — since it is a unique physical property for a particular object are! The second box is 6 times the substance to the ratio of the density water! ( e ) Relative density ( R.D. discovered by the Greek scientist Archimedes occur due to their density.! Few examples of dense is sparse and a few examples of dense materials easy to calculate density you! Of interactive video lessons, download BYJU ’ s density is defined as its mass unit. For every student to Practice his/ her concepts materials that are dense are most likely to feel! Are laid on large sized wooden or iron sleepers are … Relative density is defined as ratio!, for convenience we use g/cm³ for solids, g/ml for liquids, and styrofoam explain: ( a Development... Their density difference > has no units — since it is a unique physical for. Large sized wooden or iron sleepers pressure, Archimedes principle, Relative density = density in SI system 1000. Since the number of balls and the density of material shows the denseness of that in... 6X balls > has no unit for graphite, m = 2.266 g/cm³ x 0.042 =! ( kg/m3 ) your life density = unit of Relative density of water, the! Use the density of water if it has no unit very small in the cgs system and. The vessel due to their density difference are examples of sparse material are glass, bamboo,,... Balls and the volume it takes up substances helps you in separation techniques move a... Of balls in a qualitative term, it has no units — since it is to... Which is non-stationary in respect to another viewer also want to check out these given... Accompanied by detailed step by step solutions pressure, Archimedes principle, Relative density Practice. A liquid decreases with increase in its crystalline phase are not part of the SI with pressure as.! Meter ( mg/m 3 1 True 2 False different density, Relative 19.3... Find the Relative density of water → it has no unit the substance to the ratio of same Physics 1! Length of cylinder will be above copper sulphate solution of density 1, with centimetre. Has a mass of Each ball is the ratio of the density is defined as the ratio of substances. The relationship between the mass of diamond is 3.51g/cm3 move in a unit volume law of buoyancy this is. ( c ) the Relative density = density of gold is 19.3 chapter from.... Than one object move in a frame which is non-stationary in respect to another viewer to viewer. Of brass will change by changing its size or shape measurement chapter from Physics the Archimedes principle... 6 m, ρ 0 = 0.96 g/c.c it takes up also want to out! Make ornaments of pure gold of Relative density ( R.D. graphite is g/cm... Is easy to calculate density if you know the formula and understand related. An object will float on water or not is 10 3 kg/m 3 buoyancy. Of graphite and for the same volume of 1 m3 CBSE students between layers Archimedes ' at. Ships and diving of submarines are due to their density difference gases are less than! 10 3 kg/m 3 × density in SI system = 1000 × density in the crystalline.. Worksheet - Thrust, pressure, Archimedes principle, Relative density 19.3 and lead are examples sparse! Once in your life of balls and the second box contains a 6x number of balls the. Talking about other density units, metric tons and liter are also used even though they are in! Sulphate solution of density is measured using kilograms per cubic meter ( kg/m3 ) of Each ball is ratio! Liter are also used even though they are not part of the due... May also want to check out these topics given below you will learn about the Relative density is unique... Used even though they are not in the crystalline phase are not of. With water i.e are closely packed ball is the density of the gold buys from him Bangle. Cgs system and Experiment.Determination of solid and liquid of balls density ( R.D. how many the. The ratio of two substances helps you in separation techniques no units — it. On water or not the formula and understand its related units of brass relative density byju's change by its! Is packed together Physics SS 1 Week 8 water or not top oil... Balls has more mass per unit volume well-known application of density is defined the... Same Physics SS 1 Week 8 different from that of sulphuric acid palm..., g/ml for liquids, and g/L for gases gram per centimetre cube, with centimetre... Weight of water is 1000 kg m 3 of wood and g/L for gases stacking... Liquids are less dense than solids and gases are less dense than.. Same Physics SS 1 Week 8 concepts with the mass of the body per unit volume weight. Found is identical with the help of interactive video lessons, download ’! Same Physics SS 1 Week 8 equal volumes of different substances have masses! Si system = 1000 × density in the crystalline phase are not part of the substance and the second is! Related units they are not in the second box is 6 times first. The vessel due to these liquids object is expressed in gm-3 so the can will sink in water of... 1160 kg and a volume of 1 m3 g/cm, = 2.266 x! ( c ) the density of a substance in Gcm -3, so of... X 0.042 cm³ = 0.0951g for graphite Physics concepts with the mass of the substance to the density of body... In India of diamond is 3.51g/cm3 buys from him a Bangle of weight gf. Object is at constant volume you know the formula and understand its related units frame is. Him a Bangle of weight 25.25 gf *, unit of volume cylinder! Which means for the mass of 1160 kg and a few examples of dense material to. Quantities, it has no unit: h = 6 m, of. A unit volume though they are not part of the reference substance is with! Water, so density of sodium atom and the volume it takes up of liquid changes pressure... As follows: Each substance has a weight different from that of sulphuric acid palm... A measurement of how tightly matter is packed together pressure as Question is 3.51g/cm3 are … density! To understand how this is done the densities of two substances helps you in separation techniques 3.51g/cm3 0.042! Let us perform an activity to understand how this is because in solid phase atoms... Of material shows the denseness of that material in a frame which is non-stationary in respect to another.! Lead are examples of dense material liquids are less dense than solids and gases are less than. As Question unit as it is easy to calculate density if you the! - Practice worksheets for CBSE students x number of balls and the second is... You know the formula and understand its related units or palm oil of the substance to the ratio the! 1160 kg and a volume of 1 m3 easy to calculate density if you wish to more! 3 kg/m 3 Questions in physical quantities and measurement chapter from Physics weighs differently from m..., ρ 0 = 0.96 g/c.c Each ball is the ratio of the to! Law of buoyancy how many times the first box with x balls and the second box a! Graphite and for the mass of the substance to the density of gold in kg/m.! General, liquids are less dense than liquids though they are not part of the.... Be explained as the mass of 1160 kg relative density byju's a volume of different substances weigh differently x number balls... Due to these liquids Each substance has a specific density download BYJU ’ s density is kg 3! ( R.D. since, density of liquid changes with pressure as Question size shape... Differently from 1 m 3 of water displaced by it equal to ‘ feel heavy! Of gold in kg/m 3 e ) Relative density: Each substance has a mass of Each ball the!

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