A small, irregularly shaped rocky body that orbits the sun

A small icy object with a bright tail that orbits the sun

What is a dwarf planet?

A celestial body that has not cleared its orbit of other objects

A chunk of rock from space that burns up in Earth's atmosphere

A small rock in interplanetary space

A glowing sphere of gases that produces light through nuclear fusion

A nuclear reaction that releases energy when two nuclei fuse to form a larger nucleus

A group of millions or billions of stars held together by gravity

What does the Big Bang Theory explain?

The theory that all matter and energy were compressed into a small volume and exploded to form the universe

Matter in the universe that we cannot see because it does not emit light

A shift of wavelengths of light toward the red end of the spectrum as a light source moves away from the observer

What is the universe?

Everything that exists; all matter, energy, space, and time

An imaginary line that runs between the North and South Poles through the center of Earth

An oval-like shape of the orbits of Earth and the other planets

What is revolution in astronomy?

The orbital movement of one object around another, such as the moon around Earth or Earth around the sun

The spinning of an object such as Earth on its axis

What is electromagnetic (EM) radiation?

Energy transmitted through space as waves

What is ultraviolet (UV) light?

A type of electromagnetic radiation with wavelengths between visible light and X-rays that can harm living things

What is visible light?

A type of electromagnetic radiation that has wavelengths between infrared and ultraviolet light and can be detected by the human eye

The horizontal distance between corresponding points on adjacent waves, such as the distance between two crests or two troughs

Astronomy Flashcard Flashcards

Student preview

27 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is a nebula?

Back

An interstellar cloud of gas and dust

2.

FLASHCARD QUESTION

Front

Which hypothesis suggests that the solar system formed from a spinning cloud of dust and gas?

Back

Nebular hypothesis

3.

FLASHCARD QUESTION

Front

What is a solar system?

Back

A star and all of the planets and other objects that revolve around it

4.

FLASHCARD QUESTION

Front

What is an inner planet?

Back

One of the four planets closest to the sun

5.

FLASHCARD QUESTION

Front

What is a terrestrial planet?

Back

An Earth-like planet that is solid, dense, and rocky

6.

FLASHCARD QUESTION

Front

What is a gas giant?

Back

A planet composed mainly of hydrogen and helium

7.

FLASHCARD QUESTION

Front

What is a jovian planet?

Back

One of the four planets beyond the asteroid belt

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