Unit 3 Chapter 3

What does a layer with fish fossils can prove?

• A layer with fish fossils proves that the environment used to be water. Another layer with land animals proves that the environment was once land area.

• A layer with fish fossils proves that it is from the water.

• A layer with fish proves that it died in land.

• All above

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What is about the rock layers?

• The rock layer on the bottom is the oldest, and the rock layer on the top is the youngest.

• The rock layer on the bottom is the youngest and on the top is the oldest.

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How does the Sedimentary rock forms?

• Sedimentary rocks forms slowly over a long period of time.

• Sedimentary rocks forms slowly over a short period of time.

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is a person who uses science knowledge to design something in order to solve a problem.

• inference

• organism

• survive

• engineer

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What is a system?

• some things

• machines

• electricity

• parts that work together

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Choose all the different forms of energy.

• thermal energy

• chemical energy

• light energy

• electrical energy

• food energy

Which form of energy does a solar panel use?

• thermal energy from a volcano

• light energy from the sun

• sound energy from a bomb

• chemical energy from eating food

What is the primary function of the mitochondria in a cell?

• Energy production

• Protein synthesis

• DNA replication

• Photosynthesis

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Which of the following is a chemical change?

• Melting of ice

• Rusting of iron

• Boiling of water

• Breaking of glass

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What is the process by which plants make their food using sunlight?

• Respiration

• Photosynthesis

• Transpiration

• Digestion

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