Earth’s Changing
System
Atmosphere and
Weather
Astronomy
Chemistry
Energy
100

the outermost shell of a terrestrial planet.

crust

100

A mixsure of gasses that surrounds a planet

atmosphere 

100

an invisible force that pulls objects toward each other

gravity 

100

anything that takes up space and can be weighed

matter 

100

the energy an object has because of its motion

kinetic energy 

200

a supercontinent that incorporated almost all the landmasses on Earth.

Pangea 

200

describes how high something is.

altitude 

200

a huge collection of gas, dust, and billions of stars and their solar systems.

galaxy 

200

a unit of measurement that describes the amount of matter that makes up an object.

mass

200

the energy contained within a system that is responsible for its temperature.

thermal energy 

300

molten rock that is underground.

magma

300

A violently rotating column of air touching the ground.

tornado

300

a regular, repeating path that one object in space takes around another one

orbit 

300

the amount of space occupied by a sample of matter 

volume 

300

the energy which is stored in the bonds of chemical compounds (molecules and atoms).

chemical energy 

400

a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties.

minerals 

400

the long-term pattern of weather in a particular area.

climate 

400

very long-period waves that move through the ocean in response to the forces exerted by the moon and sun.

tides 

400

the measurement of how tightly a material is packed together.

density 

400

when an object stores energy as a result of its position, making it capable of doing more work.

potential energy 

500

the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers.

fossils 

500

the common term for the high concentration of ozone that is found in the stratosphere around 15–30 km above the earth's surface.

the ozone layer 

500

an astronomical event where the view of an object is temporarily obscured, completely concealed, or cast into a shadow.

eclipse 

500

the qualities and characteristics of a substance that describe and identify it.

property's   

500

a form of energy released from the nucleus, the core of atoms, made up of protons and neutrons.

nuclear energy