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Science Questions - All Grades

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Grade 6 Earth's Layers
Which of the following is the thickest layer of Earth?
  1. Inner Core
  2. Crust
  3. Mantle
  4. Outer core
Grade 4 Forces and Motion
Force is                                  .
  1. the push or pull on an object
  2. when an object changes position
  3. a model built by an engineer
  4. a force that works against motion
Grade 9 Biotic and Abiotic
Which of the following situations show a biotic factor operating within an ecosystem?
  1. the kind of climate in a given region
  2. carnivores that eat other animals
  3. the concentration of hydrogen gas in the air
  4. the rate of water flow in a body of water
Grade 6 Food Chains and Webs
Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. These actions most benefit plants by what?
  1. returning nutrients to the soil.
  2. releasing oxygen into the air.
  3. making space for new animals.
  4. decreasing the population of herbivores.
Grade 6 Matter
Evaporation is when                                                                 .
  1. a substance changes from a liquid into a solid material.
  2. a substance changes from a liquid to a gas (or vapor) naturally.
  3. a substance changes from a gas (or vapor) into a liquid.
Grade 6 Matter
What are states of matter?
  1. The temperature at which a liquid boils and becomes a gas.
  2. A law that states that for a fixed amount of gas at a constant temperature, the volume of the gas increases as its pressure decreases and the volume of the gas decreases as its pressure increases.
  3. A term used to describe a physical or chemical change in which energy is given of.
  4. The physical forms in which a substance can exist; includes solid, liquid, gas, and plasma.
Grade 8 Matter
What is a gas?
  1. It has a definite shape and volume.
  2. It has a definite shape, but no definite volume.
  3. It has no definite shape or volume.
  4. It has no definite shape, but a definite volume.
Grade 4 Food Chains and Webs
Grade 7 Forces and Motion
When an unbalanced force acts on an object, the force                                         .
  1. changes the motion of the object
  2. is cancelled by another force
  3. does not change the motion of the object
  4. is equal to the weight of the object
Grade 5 Magnetism and Electricity
Grade 9 Heat Transfer
Friction causes kinetic energy to be converted into                  .
  1. potential energy
  2. thermal energy
  3. mechanical energy
  4. electrical energy
Grade 4 Forces and Motion
Which of the following is considered an invisible force?
  1. Gravity
  2. Friction
  3. Air resistance
  4. All of the above
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