4th Science review

Matter

100

• What are the three states of matter?

Answer: Solid, liquid, gas

200

What happens to matter when ice melts? 

• Answer: It changes from a solid to a liquid.

300

What happens to matter when water freezes?

• Answer: It changes from a liquid to a solid.

• 
  

400

Which material keeps a drink cold best: metal, plastic, or foam?

• Answer: Foam

500

What is a physical property?

Answer: A characteristic you can observe such as size, shape, color, or texture. 

Force and energy

100

What force pulls objects toward Earth?

• Answer: Gravity

200

What happens when you push a toy car harder?

• Answer: It moves faster or farther.

300

What is friction?

• Answer: A force that slows objects down when surfaces rub together.

400

What is speed?

• Answer: How fast something moves.

500

Give an example of stored energy.

6. Answer: A battery, food, or a stretched rubber band. 

Earth and Space

100

What causes day and night?

• Answer: Earth rotating on its axis.

200

How long does Earth take to orbit the Sun?

• Answer: One year

300

Why do shadows change during the day?

• Answer: The Sun appears to move across the sky.

400

What causes moon phases?

• Answer: The Moon orbiting Earth and sunlight reflecting off it.

500

How are rocks broken into soil?

11. Answer: Weathering and erosion. 

Weather and Water Cycle

100

What are the four main parts of the water cycle?

• Answer: Evaporation, condensation, precipitation, collection

200

What tool measures temperature?

• Answer: Thermometer

300

What clouds may bring rain?

• Answer: Dark rain clouds (nimbus clouds)

400

What causes wind?

• Answer: Air moving from one place to another.

500

Why is weather different in seasons?

Answer: Because Earth tilts as it moves around the Sun. 

Organisms and Environments

100

What do plants need to survive?

• Answer: Sunlight, water, air, nutrients, space

200

How do animals depend on plants?

• Answer: For food and oxygen.

300

What is a producer?

• Answer: A living thing that makes its own food, like a plant.

400

What is a consumer?

• Answer: A living thing that eats plants or animals.

500

How does camouflage help animals?

21. Answer: It helps them hide and stay safe.