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100

This Greek root means 'heat' and is found in the word for a device that keeps your soup hot.

therm

100

This Greek root means 'water' and is used in hydropower, meaning electricity generated by flowing water.

hydro

100

This Latin root means 'water' and is found in the word for a tank where pet fish live.

aqua

100

This root means 'small' and is used in the name of an instrument that lets you see tiny cells.

micro

100

The opposite of micro, this root means 'large' and is often used when looking at the 'big picture' in economics.

macro

200


This root means 'measure' and can be found at the end of words like thermometer and barometer.

meter

200

Meaning 'to look' or 'to see', this root is found in words for instruments that view distant stars or tiny bacteria.

scope

200

A speedometer in a car measures this.

speed

200

Pilots monitor this to know how high their airplane is flying.

altitude

200

The hemisphere is half of this shape.

sphere

300

This root means 'heavy' and is the base for the force that pulls objects toward Earth.

grav

300

This root means 'ball' and describes the 3D shape of the Earth.

spher

300

Earth, Mars, and Jupiter are examples of these objects that travel around the Sun.

planets

300

A flat surface in geometry that extends forever in all directions is called this.

a plane

300

This instrument in an airplane measures height above sea level.

altimeter

400

This root means 'environment' or 'house' and forms the base of the word for the study of how living things interact.

eco

400


This root means 'high' and describes the distance above sea level in aviation and geography. (Be careful, it's not avi)

alt

400

Meaning 'vapor' or 'gas', this root is the first part of the word for the layer of gases surrounding Earth.

atmo

400

An athlete who competes in water sports might be described with this adjective meaning “related to water.”

aquatic

400

An extremely small organism that can only be seen with magnification is called this.

microorganism

500


If you are studying 'thermodynamics', you are studying the movement of this.

heat
500

An 'aqueduct' is a structure built to transport this substance.

water

500

When homes use energy from inside the Earth to stay warm, they use this type of heating.

geothermal

500

A power plant that creates electricity by using moving water is called this.

hydroelectric power

500

A scientist who studies how water moves through Earth’s systems studies this field.

hydrology