The system consisting of the sun and the planets and objects that revolve around it.

A unit of distance equal to the distance between Earth and the sun , about 150 kilometers.

An object that orbits a star, is large enough to have become rounded by its own gravity.

An object that orbits the sun and is spherical, has not cleared the area of its orbit.

One of the small asteroids-like bodies that formed the building blocks of the planet.

The central region of the sun, where nuclear fusion takes place.

The process in which two atomic nuclei combine to form a larger nucleus, forming a heavier element and releasing huge amounts of energy; the process by which energy is produced in stars.

A region of very tightly packed gas in the sun's interior where energy is transferred mainly in the form of electromagnetic radiation.

The outermost layer of the sun's interior.

The inner layer of the sun's atmosphere that gives off it's visible light.

The middle layer of the sun's atmosphere.

The outer layer of the sun's atmosphere.

A stream of electricity charged particles that emanate from the sun's corona.

A dark area of gas on the sun's surface that is cooler than surrounding gases.

A huge reddish loop of gas that protrudes from the sun's surface, linking parts of sunspots regions.

An eruption of gas from sun's surface that occurs when the loops in sunspot regions suddenly connect.

The name often given to the four inner planet: Mercury, Venus, Earth, and Mars.

The trapping of heat near a planet's surface by certain gases in the planet's atmosphere.

The name often given to the outer planets: Jupiter, Saturn, Uranus, and Neptune.

A thin disk of small ice and rock particles surrounding a planet.

The region of the solar system between the orbits of Mars and Jupiter, where many asteroid are found

A region where many small objects orbit the sun and that stretches from the beyond the orbit of Neptune to about 100 miles Earth's distance from the sun.

A spherical region of comets that surrounds the solar system.

A loose collection of ice and dust that orbits the sun, typically in a long narrow orbit.

The fuzzy outer layer of a comet.

The solid inner core of a comet.

One of the rocky objects revolving around the sun that era too small and numerous to be considered planets.

A chunk of rock or dust in space, generally smaller than an asteroid.

A streak of light in the sky produced by the burning of a meteoroid in Earth atmosphere.

A meteorite that passes through the atmosphere and hits Earth's surface.

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Chapter 3

lesson 2-6 the solar system

Question	Answer
Solar system	The system consisting of the sun and the planets and objects that revolve around it.
astronomical unit	A unit of distance equal to the distance between Earth and the sun , about 150 kilometers.
planet	An object that orbits a star, is large enough to have become rounded by its own gravity.
dwarf planet	An object that orbits the sun and is spherical, has not cleared the area of its orbit.
planetesimal	One of the small asteroids-like bodies that formed the building blocks of the planet.
core	The central region of the sun, where nuclear fusion takes place.
nuclear fusion	The process in which two atomic nuclei combine to form a larger nucleus, forming a heavier element and releasing huge amounts of energy; the process by which energy is produced in stars.
radiation zone	A region of very tightly packed gas in the sun's interior where energy is transferred mainly in the form of electromagnetic radiation.
Convection zone	The outermost layer of the sun's interior.
photosphere	The inner layer of the sun's atmosphere that gives off it's visible light.
chromospere	The middle layer of the sun's atmosphere.
corona	The outer layer of the sun's atmosphere.
solar wind	A stream of electricity charged particles that emanate from the sun's corona.
sunspot	A dark area of gas on the sun's surface that is cooler than surrounding gases.
prominence	A huge reddish loop of gas that protrudes from the sun's surface, linking parts of sunspots regions.
solar flare	An eruption of gas from sun's surface that occurs when the loops in sunspot regions suddenly connect.
terrestrial planet	The name often given to the four inner planet: Mercury, Venus, Earth, and Mars.
greenhouse effect	The trapping of heat near a planet's surface by certain gases in the planet's atmosphere.
gas giant	The name often given to the outer planets: Jupiter, Saturn, Uranus, and Neptune.
ring	A thin disk of small ice and rock particles surrounding a planet.
asteroid belt	The region of the solar system between the orbits of Mars and Jupiter, where many asteroid are found
Kuiper belt	A region where many small objects orbit the sun and that stretches from the beyond the orbit of Neptune to about 100 miles Earth's distance from the sun.
Oort cloud	A spherical region of comets that surrounds the solar system.
Comet	A loose collection of ice and dust that orbits the sun, typically in a long narrow orbit.
coma	The fuzzy outer layer of a comet.
Nucleus	The solid inner core of a comet.
asteroid	One of the rocky objects revolving around the sun that era too small and numerous to be considered planets.
meteoriod	A chunk of rock or dust in space, generally smaller than an asteroid.
meteor	A streak of light in the sky produced by the burning of a meteoroid in Earth atmosphere.
meteorite	A meteorite that passes through the atmosphere and hits Earth's surface.

Created by: user-1975075

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