Astronomy and Atmospheric Terms

Outer space

• Everything beyond Earth's atmosphere

• The area where airplanes fly

• The region where satellites orbit Earth

• The space inside a black hole

Atmosphere

• The layer of water surrounding the earth.

• The envelope of gases surrounding the earth or another planet.

• The solid outer layer of the earth.

• The region of space beyond the earth's atmosphere.

Rotation

• The spinning of an object on its own axis.

• The movement of an object around another object.

• The change in position of an object over time.

• The process of an object moving in a straight line.

Refraction

• The bending of a wave when it enters a medium where its speed is different.

• The reflection of light when it hits a surface.

• The absorption of light by a material.

• The scattering of light in different directions.

Light ray

• A line or stream of light that travels in a straight path.

• A beam of light that bends around corners.

• A type of light that is visible only at night.

• A collection of colors emitted by a prism.

Celestial Objects

• The sun, moon, stars, and objects in the sky

• Planets and asteroids in the solar system

• Clouds and atmospheric phenomena

• Artificial satellites orbiting Earth

Horizon

• The line at which the earth's surface and the sky appear to meet.

• A type of cloud formation in the sky.

• The boundary between two different ecosystems.

• A geographical term for a flat area of land.

Orbit

• The curved path of a celestial object or spacecraft around a star, planet, or moon.

• A straight line path taken by an object in space.

• The distance between two celestial bodies in space.

• A type of spacecraft used for interstellar travel.

Medium

• A substance that absorbs energy

• A material that energy can pass through

• A type of energy source

• A method of energy storage

Sunrise

• The time in the morning when the sun appears or full daylight arrives.

• The moment when the sun sets in the evening.

• The period of twilight before the sun rises.

• The time when the sun is at its highest point in the sky.