What's the Matter?
Energy Explosion!
Earth in Action
Ecosystems & Environment
Structures & Behaviors of Organisms
100

What are the three states of matter?

Solid, Liquid, Gas

100

What happens to light when it hits a smooth, shiny surface like a mirror?

It reflects—it bounces off the surface.

100

What causes day and night?

Earth's rotation on its axis.


100

What do we call all the nonliving and living parts of an ecosystem?

Abiotic and Biotic factors

100

What structure helps birds fly?

Its wings.

200

What is a mixture?

Two or more substances combined, that can be separated. 

200

A hair dryer produces what type of energy?

Thermal

200

What is the water cycle process where water vapor cools and forms clouds?

Condensation

200

What role do producers play in a food chain?

They make their own food using sunlight (like plants).

200

What is the function of an owl’s large eyes?

So they can hunt at night. 

300

What physical property can you use to tell if something will sink or float?

Density

300

What part of a circuit must be closed to allow electricity to flow?

The switch.

300

What processes form sedimentary rocks?

Weathering, erosion, deposition, compaction, cementation

300

What is an invasive species?

An invasive species is a plant or animal that doesn’t belong in an area.

300

What is camouflage, and how does it help animals?

Camouflage helps animals blend in with their surroundings to hide from predators or sneak up on prey.

400

What is solubility?

The ability of a substance to dissolve in a liquid.

400

What happens to light when it passes through water?

It bends - refraction


400

How are fossil fuels formed?

From dead plants and animals over millions of years under heat and pressure

400

How can pollution in a river affect animals in a forest nearby?

It can poison animals that drink the water or eat plants growing near the river.

400

What behavior helps baby sea turtles survive right after hatching?

They instinctively crawl toward the ocean.

500

How can you separate a mixture of sand and iron filings?

Use a magnet to attract the iron.

500

What energy transformation occurs when using a toaster?

Electrical Energy to Thermal Energy 

500

What landform is created by flowing water over time?

A canyon

500

What is one way people can help protect ecosystems?

By conserving water, recycle, plant native trees or flowers, not cutting down trees.

500

What’s the difference between an instinct and a learned behavior?

Instincts are actions animals are born knowing how to do; learned behaviors are things they learn from others.