3rd Grade Final Exam Review Science

During the winter, many animals hibernate. What is the main reason animals like bears hibernate in cold months?

• They want to explore new places while it’s quiet.

• They need to practice sleeping for long hours.

• It helps them save energy because food is hard to find.

• It’s too noisy outside, so they stay inside to rest.

Derek places a cup of cold juice (6°C) on the kitchen counter where the air is warmer (22°C). What will most likely happen to the temperature of the juice after an hour?

• The juice's temperature will decrease because the cold will move into it from the counter.

• The juice's temperature will stay the same because it is not being heated.

• The juice's temperature will increase because heat will move from the warmer air to the cooler juice.

• The juice's temperature will decrease because it is not in the refrigerator.

The picture shows an area in Georgia with tall, tree-covered hills and cooler temperatures. What type of habitat is this?

• Wetlands

• 
  Mountains

• Piedmont

• Coastal Plain

How does recycling help protect the Earth?

• It keeps factories running all the time.

• It adds more trash to landfills.

• It helps reduce the amount of garbage we throw away.

• It uses more trees to make new products.

he picture shows a deep valley with a river at the bottom.
Over many, many years, the land has changed.

What is the most likely reason this landform was created?

• The sun melted the rock and made a deep hole.

• Animals dug tunnels that made the land fall in.

• The river slowly carved the land away over a long time.

• People used tools to break down the rock quickly.

Where are fossils most often discovered?

• Inside active volcanoes

• In layers of sedimentary rock

• Floating in lakes and rivers

• In the roots of living trees

Toby and Maya are talking about what to do with plastic grocery bags. Toby wants to throw them in the trash, but Maya says they should be reused or recycled. Which idea is better for the environment?

• Toby’s, because the bags will break down quickly in the trash.

• Maya’s, because reusing or recycling plastic bags keeps them out of nature.

• Toby’s, because throwing away plastic bags helps the trash company.

• Maya’s, because plastic bags are easy to throw into the ocean.

A class is learning about different types of soil. They want to plant flowers and need soil that holds water and drains well. Look at the picture - Which soil would work the worst for growing flowers?

• Clay and silt

• Gravel and sand

• Topsoil and clay

• Silt and topsoil

A student is studying different properties of rocks. She picks up a rock and notices that it sparkles when the light hits it. What property is the student observing?

• The rock’s size

• The rock’s weight

• The rock’s luster/shininess

• The rock’s temperature

A student goes outside on a chilly morning and begins to feel cold. Which action would help the student warm up?

• Sit on a cold bench

• Wave their arms up and down quickly

• Drink a glass of ice water

• Stand in the shade of a building