Earth
Processes
Easy
Challenging
100

outermost layer of planet

Crust

100

computer simulation

Model

100

a mixture of gases required for breathing

Air

100

a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system

 conservation of mass

200

physical substance in general

Matter

200

strength/energy of action/movement

Force

200

a visual attribute of things from the light they emit

Color

200

a fundamental principle of classical physics that matter cannot be created or destroyed in an isolated system

Conservation of Matter


300

The third planet from the sun

What is Earth ?

300

creating organic matter through photo/chemosynthesis

Productive

300


a visible mass of water or ice particles suspended at a considerable altitude

Cloud

300

an increase in rate of change

Acceleration 

400

line of foam on seashore from breaking waves

Surf

400

pressure/tension exerted on a material object

Stress

400

the time when something begins (especially life)

Birth

 

400

the branch of physics that studies celestial bodies

Atronomy

500

sea movement in rolling waves that do not break

Swell


500

flow of nutrients or elements

Cycle

500

a process in which a substance reacts with oxygen to give heat and light

Burning

500

harmonious arrangement or relation of parts within a whole

Balance