Gr 8 Natural Sciences Ch 2: Density, mass and volume
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Questions and Answers

What is the formula to calculate density?

  • D = V - m
  • D = m × V
  • D = V/m
  • D = m/V (correct)

    • What does a dense material have in a given volume?

  • A high mass (correct)
  • A low mass
  • A high volume
  • A low density

    • What is the unit of measurement for density in the example given?

  • cm²/g
  • g/cm³ (correct)
  • cm³/g
  • g/cm²

    • What is the purpose of the activity 'Comparing Densities'?

    <p>To compare different materials that have the same volume but different densities</p> Signup and view all the answers

    What is measured first in the procedure to compare densities?

    <p>The volume of each cube</p> Signup and view all the answers

    What can be observed about the material with the highest mass for the same volume?

    <p>It has the highest density</p> Signup and view all the answers

    What is the unit of measurement for mass that is equal to 1000 milligrams?

    <p>Gram</p> Signup and view all the answers

    What is the physical quantity that is a measure of the amount of space an object occupies?

    <p>Volume</p> Signup and view all the answers

    What is the unit of measurement for volume that is equal to 1000 milliliters?

    <p>Liter</p> Signup and view all the answers

    What is the term that describes how tightly packed the particles in a material are?

    <p>Density</p> Signup and view all the answers

    What is the ratio of mass to volume?

    <p>Density</p> Signup and view all the answers

    What is the unit of measurement for mass that is equal to 1000 grams?

    <p>Kilogram</p> Signup and view all the answers

    What is the physical quantity that is a measure of the amount of matter in an object?

    <p>Mass</p> Signup and view all the answers

    What is the unit of measurement for volume that is equal to 1 milliliter?

    <p>Cubic Centimeter</p> Signup and view all the answers

    What is the difference between a dense material and a less dense material?

    <p>Dense material has a higher mass in a given volume, while less dense material has a lower mass</p> Signup and view all the answers

    What is the purpose of measuring the volume and mass of each cube in the 'Comparing Densities' activity?

    <p>To calculate the density of each cube</p> Signup and view all the answers

    Why does a dense piece of cake feel heavy for its size?

    <p>Because it has a higher mass in a given volume</p> Signup and view all the answers

    What can be concluded about two materials that have the same volume but different masses?

    <p>The material with the higher mass has a higher density</p> Signup and view all the answers

    Why does a sponge feel light for its size?

    <p>Because it is less dense</p> Signup and view all the answers

    What is the result of dividing the mass of an object by its volume?

    <p>The density of the object</p> Signup and view all the answers

    What is the term used to describe a property of a material or system that can be measured?

    <p>Physical Quantity</p> Signup and view all the answers

    A measuring cup has a volume of 250 mL. What is the equivalent volume in cubic centimeters?

    <p>250 cm³</p> Signup and view all the answers

    Which of the following is NOT a unit of measurement for mass?

    <p>Liter (L)</p> Signup and view all the answers

    What is the main difference between mass and volume?

    <p>Mass is a measure of the amount of matter, while volume is a measure of the amount of space occupied</p> Signup and view all the answers

    Which of the following is an example of a material with a high density?

    <p>A gold bar</p> Signup and view all the answers

    What is the relationship between the units of measurement for mass and volume?

    <p>1 gram (g) is equal to 1 milliliter (mL)</p> Signup and view all the answers

    What is the purpose of understanding the concepts of mass, volume, and density?

    <p>To describe and measure the properties of different materials accurately</p> Signup and view all the answers

    Which of the following is a characteristic of a material with a low density?

    <p>It has a low mass per unit volume</p> Signup and view all the answers

    What is the primary reason for calculating the density of different materials?

    <p>To understand their 'heaviness' properties</p> Signup and view all the answers

    In the 'Comparing Densities' activity, what is the purpose of measuring the mass and volume of each cube?

    <p>To determine their density</p> Signup and view all the answers

    Why do materials with different densities have different 'heaviness' properties?

    <p>Because they have different masses for the same volume</p> Signup and view all the answers

    What can be concluded about two materials with the same volume but different masses?

    <p>They have different densities</p> Signup and view all the answers

    Why does a dense material feel heavier than a less dense material of the same volume?

    <p>Because it has a higher mass for the same volume</p> Signup and view all the answers

    What is the advantage of calculating density when comparing different materials?

    <p>It helps us understand their 'heaviness' properties</p> Signup and view all the answers

    What is the primary difference between measuring mass and measuring volume?

    <p>The physical quantity being measured</p> Signup and view all the answers

    Which of the following statements is true about density?

    <p>It is a ratio of mass to volume.</p> Signup and view all the answers

    What is the purpose of understanding the concepts of mass, volume, and density?

    <p>To measure the physical properties of an object accurately.</p> Signup and view all the answers

    What is the relationship between the units of measurement for mass and volume?

    <p>The units of measurement are distinct and unrelated.</p> Signup and view all the answers

    Which of the following is an example of a material with a high mass per unit volume?

    <p>A cube of lead.</p> Signup and view all the answers

    What is the result of multiplying the length, width, and height of an object?

    <p>The volume of the object.</p> Signup and view all the answers

    What is the characteristic of a material with a low density?

    <p>It has a low mass per unit volume.</p> Signup and view all the answers

    What is the term used to describe a property of a material or system that can be measured?

    <p>Physical quantity.</p> Signup and view all the answers

    What is the main reason why a dense material feels heavier than a less dense material of the same volume?

    <p>Because it has a higher mass per unit volume</p> Signup and view all the answers

    What is the purpose of measuring the volume of each cube in the 'Comparing Densities' activity?

    <p>To calculate the density of each cube</p> Signup and view all the answers

    What can be concluded about two materials that have different densities but the same volume?

    <p>They have different masses</p> Signup and view all the answers

    What is the advantage of calculating the density of different materials?

    <p>It helps to compare their 'heaviness' properties</p> Signup and view all the answers

    What is the result of dividing the mass of an object by its volume?

    <p>The density of the object</p> Signup and view all the answers

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