Biology
Geology
Physics
Atoms & Chemistry
Fun Facts
100

The basic building block of life 

Cell

100

The numerical age, in years, of a rock or object

Absolute age

100

This type of energy happens when objects are in motion 

Kinetic

100

The negatively charged particle of an atom 

Electron

100

The base metric unit for volume

Liter

200

Charles Darwin's theory of life slowly changing over time according to their environment 

Evolution / Natural selection

200

A principle of relative-age dating states that the oldest rocks are found on the bottom. 

Superposition

200

A physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects

Magnetism

200

This number represents the amount of protons and neutrons in an atom

Atomic number 

200

The number of colors in a rainbow 

Seven

300

The powerhouse of the cell 

Mitochondria

300

A natural process that causes rocks to slowly disappear over time. 

Erosion

300

The formula to calculate speed 

speed = distance/time

300

The chemical composition of diamonds 

C (Carbon)

300
This geological feature makes most of the Earth's oxygen

Oceans

400

The part of the plant cell that enables photosynthesis 

Chloroplast
400

A principle that if one geologic feature cuts across another feature, the feature that it cuts across is older 

Cross-cutting relationships
400

This physicist was credited with the discovery of gravity, and went on to write the law of universal gravitation 

Isaac Newton

400

The most abundant element in our universe 

Hydrogen

400

This gravitational singularity has a pull so strong even light cannot escape 

Black hole

500

The process of cells dividing into more cells, has 4 phases.

Mitosis

500

A principle stating that the geologic processes that occur today are similar to those that occurred in the past 

Uniformitarianism

500

This equation from Einstein's theory of relativity states that energy and mass are interchangeable 

E = mc2

500

The process of water molecules moving from an area of high concentration to an area of low concentration 

Osmosis

500

Many surgical and medical blades are made with this igneous rock 

Obsidian