Science Pre and Post Test (All Questions)

What are the building blocks of all matter?

• potential and kinetic energy

• heat and electricity

• atoms and molecules

• crystals and compounds

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Which gives shape and support to the human body?

• brain

• heart

• skeleton

• stomach

Which food group provides the best source of carbohydrates?

• meat and poultry

• fruits and vegetables

• breads and cereal grains

• dairy products

Which of the four menus is the least healthy?

• 1

• 2

• 3

• 4

The organ that holds solid waste materials before they are passed from the body is the

• pancreas

• liver

• stomach

• large intestine

Michael discovers that a fish breathes less often in cool water. He correctly hypothesizes that

• the fish lows down in cool water, and does not need as much oxygen.

• the fish is eating, and does not have time to breathe as much.

• the fish is sleeping, and does not need as much oxygen.

• there is less oxygen in cool water, so the fish breathes slowly.

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Which are NOT found in both birds and insects?

• eggs

• feathers

• legs

• wings

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A fish is dark on the top and light on the bottom because

• the colors help the fish swim better.

• the sun makes the top part of the fish turn dark.

• the colors make the fish harder for predators to see.

• the colors keep the fish from turning upside down.

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Which is an example of a physical change?

• burning leaves

• baking bread

• rusting pipes

• tearing paper

A lizard's tail breaks very easily. How does this help to protect the lizard?

• The lizard can leave pieces of its tail to mark its territory.

• During a food shortage, the lizard can break off its tail and eat it.

• The lizard can leave broken pieces of tail to fool predators or to attract a mate.

• If a predator catches the lizard by the tail, the tail breaks off and the lizard gets away.

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