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Science Questions - All Grades

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Grade 6 The Moon
The Moon is visible to us because it                                  .
  1. reflects light from Sun
  2. reflects light from Earth
  3. produces light through fusion
  4. produces light through combustion
Grade 8 Cell Structure and Function
Lysosomes in the cell work to                      .
  1. get rid of waste
  2. provide protein
  3. store all information
  4. transport materials
Grade 7 Biochemical Pathways
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 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 7 DNA, RNA, and Genetics
The twisted shape of DNA is a                .
  1. double ladder
  2. double helix
  3. nucleotide
  4. base pair
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 10 Evolution
Evolution is the                                                                       .
  1. process of maintaining homeostasis
  2. process that results in the increase of living material in an organism
  3. process of accumulating adaptations gradually over time
  4. none of the above
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
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.
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