The Solar System Test Review

Vocabulary flashcards generated from the Solar System Test Review sheet covering astronomers, solar features, planetary classifications, and celestial objects.

Telescope

An optical instrument used to observe distant celestial objects such as planets and stars.

Ellipse

An oval-shaped closed curve that describes the path of a planet's orbit around the Sun.

Comet

A small celestial object composed of ice, dust, and rock that orbits the Sun and forms a glowing tail near the Sun.

Terrestrial

Relating to Earth or describing rocky planets with solid surfaces.

Nuclear Fusion

The nuclear process in the Sun's core where hydrogen atoms combine to form helium, producing energy.

Asteroid

A small, rocky body orbiting the Sun, mostly located in the region between Mars and Jupiter.

Corona

The outermost layer of the Sun's atmosphere, extending millions of kilometers into space.

Solar Flare

A sudden, intense burst of energy and radiation released from the Sun's surface.

Prominence

A large, bright loop of dense gas anchored in the Sun's surface and extending out into the corona.

Solar Wind

A continuous stream of high-energy charged particles flowing outward from the Sun.

Sun Spot

A cooler, darker region on the surface of the Sun caused by strong magnetic activity.

Meteoroid

A small rocky or metallic particle traveling through space.

Meteor

The streak of light seen in the sky when a meteoroid enters Earth's atmosphere and burns up.

Meteorite

A meteoroid that survives its passage through Earth's atmosphere and lands on the ground.

Galileo

An astronomer who used the telescope to make key astronomical discoveries supporting the heliocentric model.

Ptolemy

An ancient astronomer who developed the geocentric model placing Earth at the center of the universe.

Copernicus

The astronomer who formulated the heliocentric model proposing that planets revolve around the Sun.

Brahe

An astronomer who gathered precise astronomical observations of planetary movements prior to the telescope.

Terrestrial Planets

The inner, rocky planets with solid surfaces: Mercury, Venus, Earth, and Mars.

Gas Giants

The outer, large planets primarily made of hydrogen and helium: Jupiter, Saturn, Uranus, and Neptune.

Goldilocks Conditions

The atmospheric and temperature conditions suitable for supporting liquid water and life on a planet.

Asteroid Belt

The region between the orbits of Mars and Jupiter containing the majority of asteroids.

Kuiper Belt

A disk-shaped region beyond Neptune's orbit containing small, icy celestial bodies.

Oort Cloud

A vast, spherical shell of icy objects surrounding the solar system far beyond the Kuiper belt.

Europa

A moon of Jupiter known for its smooth icy surface and potential subsurface ocean.

Photosphere

The visible, light-emitting inner layer of the Sun's atmosphere.

Chromosphere

The middle layer of the Sun's atmosphere located between the photosphere and the corona.

Heliocentric

A solar system model in which Earth and other planets revolve around the Sun.

Geocentric

A astronomical model in which Earth is fixed at the center with all celestial bodies revolving around it.

Greenhouse Effect

The process by which heat is trapped by a planet's atmosphere.