Plants
Earth's Changing Surface
Animals
Energy
Waves
100

What is a sharp, pointy structure that is a branch or stem?

A Thorn

100

The process of breaking down is

Weathering

100

What is the process of breaking down food in an animal's body?

Digestion

100

A natural resource that cannot be replaced is called what?

Non-renewable resource

100

The length of a wave is called?

Wavelength

200

What is the tough outer covering of the stems of most trees and many bushes?

Bark

200

Moving rock or soil from 1 place to another is what?

Erosion

200

The process of moving blood is called

Circulation

200

Name 1 non-renewable resource

coal, oil, natural gas

200

Water waves, waves on a string, and ______ waves are examples of waves.

Sound

300

What the organism does when it senses the stimulus?

Is a response.

300

Rock that is formed from deposited sediment is called what?

Sedimentary rock

300

An animal structure that contracts and relaxes to produce movement 

Muscle

300

During energy transfer, to _____ means to touch something while moving.

Collide

300

How big the wave is, is called _______

Amplitude

400

The process by which plants use energy from light to make food is known as what?

Photosynthesis

400

What is a slow-moving river of ice called?

A Glacier

400

An animal detects stimuli with their ______ receptors

Sense

400

The amount of energy a moving object has depends on its ____ and speed.

Weight
400

______ waves travel through Earth's Crust and other layers 

Seismic

500

What plant structure grows into soil or water?

Roots

500

Where do you look to find how old a fossil is?

a fossil record

500

A behavior that an animal is born knowing is an 

Instinct

500

_____ transfers energy better than plastic.

Metal

500

Type of water wave that is catastrophic? 

Tsunami