Earth Science
Astronomy
Physics
Chemistry
Biology
100

The Crust, The Mantle, and the Core are Earth's 

Layers

100

Major bodies orbiting the Sun that are massive enough to have their own gravity

Planets

100

Quantity of matter an object has

Mass

100

Number of protons in the atomic nucleus

Atomic Number

100

Eukaryotic organelles that break down organic molecules to produce ATP.

Mitochondria

200

Shaking of the ground that results when rock under Earth's surface moves and breaks

Earthquakes

200

Dwarf Planet in our Solar System

Pluto

200

3 Laws of Motion written by

Isaac Newton

200

Time required for half the atoms in a sample of a radioactive isotope to decay.

Half-Time

200

An organism that has two identical alleles for a given one

Homozygote

300

The remains or traces of an ancient life forms

Fossils

300

A large assemblage of stars, interstellar gas, and dust

Galaxy

300

Work/Time=

Power

300

Structure in which atoms of different elements are bonded to one another

Compound

300

Inherited changes in populations of organisms over time.

Evolution

400

Hill or mountain formed by extrusion of lava, ash, and rock fragments

Volcano

400

Distance light travels in a year

Light Year

400

A Projectile or small body that orbits a larger body.

Satellite

400

Combination of two or more substances in which each substance retains its own properties

Mixture

400

External skeleton

Exoskeleton

500

The removal and transport of pieces of preexisting rock

Erosion

500

The first four planets orbiting the Sun; Mercury, Venus, Earth, and Mars

Inner Planets

500

Thermal energy that flows from a substance of higher temperature to a substance of lower temperature

Heat

500

Process by which a reactant loses one or more electrons

Oxidation

500

Cell that receives and transmits electrical signals from one part of the body to another

Neuron