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4th gr. Common Assessment #3

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  • Which material is a better conductor: plastic, wood, metal, or rubber?
    metal is the better conductor.
  • What are the results of motion?
    Always a position change, sometimes a direction change.
  • Why would one student compare their data to another student after an investigation?
    To see if their data matches
  • What will always change when an object is in motion?
    its position (location)
  • What is Earth's hydropshere?
    the total amount of water on our planet
  • What cities make the best locations for wind turbines to be used for wind energy collection?
    Cities with the highest wind speed average.
  • What unit of measurement is used to record a change in temperature?
    degrees (Celsius or Fahrenheit)
  • What is a good insulator used in a kitchen?
    possible answers: oven mitts, plastic handles on hot objects.
  • If two jars are filled with different amounts of water, which jar would have a higher pitched sound if hit with a spoon?
    The jar with less water would make a higher pitched sound. It would vibrate faster than the jar filled with water. The water slows down the vibration.
  • If you had a toy car and two ramps of different heights, which ramp would make the car go faster?
    The taller ramp will make the car go faster.
  • What is a conductor?
    A material that transfers heat well
  • What science tool helps you see details in very small things?
    a microscope
  • What science tool allows you to see details in objects that are very far away?
    a telescope
  • What type of energy is formed when something vibrates?
    sound energy
  • Why would a piece of metal move towards a stone?
    The stone is magnetic, so it is attracting the metal object.
  • What type of energy comes from plugs in the wall?
    electrical energy
  • What is the definititon of matter
    anything with mass and volume
  • A physical change in matter does not involve a new substance being formed. What is an example of a physical change?
    A change in the state of matter or cutting or breaking the matter into pieces
  • What happens as a ball rolls down a hill?
    It gets faster as long as it is rolling downward.
  • What happens to some metals when they get wet?
    They rust (which is a chemical change)
  • What are some physical properties used to describe objects?
    shape, texture, hardness, size
  • If you change one thing in an investigation, then repeat the investigation, what do you call it?
    Changing a variable
  • What is the formula for speed?
    distance ÷ time = speed
  • What is happening to the state of matter of water when it boils?
    It is changing from a liquid to a gas
  • A chemical change in matter involves the formation of a new substance. What is something that would cause a chemical change in matter?
    burning, rusting, or cooking
  • If you had a rock that had a mass of 40 g and you broke it into, what would be the combined mass of all the pieces?
    40 g.
  • How does heat transfer?
    Heat always transfers from warmer objects to cooler objects.
  • What is an insulator?
    A material that limits the amount of heat that passes through it.
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