4th Grade MYF Science Review Quiz

What will happen to the grasshopper population if the lizard and hawk populations disappear?

• The grasshoppers will disappear.

• The snakes will increase in numbers.

• The mice will eat more grass.

• The grasshoppers will increase in numbers.

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Which one of these is not a lever?

• Scissors

• Wheelbarrow

• See Saw

• Deck Screw

The light is shining onto a mirror. What is the best sentence to describe how the light behaves?

• Light goes through the mirror

• Light reflects off the person’s clothing

• Light bounces off the person and hits the mirror

• Light bounces off the mirror and reflects onto the person

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What would be the best use of this tool?

• To see plants in outer space

• To look at very small, microscopic particles

• To see furniture across the room

• To look at small items that are close to you

How do plants get energy?

• They get food from other animals.

• They make their own food.

• They don’t need food.

• They only need air and water.

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What do decomposers do in an ecosystem?

• They make their own food using sunlight.

• They eat plants and animals for food.

• They break down dead plants and animals into nutrients.

• They hunt other animals for food.

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If these items were dropped from different heights, which one would have the highest gravitational pull?

• Bowling ball

• Sofa

• Cinder block

• Brick

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Which organisms will receive less energy if the mouse is removed from this food web?

• The deer and grasshopper

• The snake and eagle

• The frog and eagle

• The snake and grasshopper

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Imagine you live near a river. What might cause the most harm to the organisms living there?

• Fishing in the river

• Pouring yard chemicals into the water

• Throwing stones into the river

• Building a picnic table next to the river

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Look at the picture of an ecosystem.  Which choice shows the consumers?

• Frog and fish

• Snail and water weeds

• Plants and flies

• Tadpoles and the sun

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