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Vocab
Planets and Stars 1
Planets and Stars 2
Galaxies and the Moon
The Sun and its Layers
100
The sun and the objects that travel around it make up the ____________.
solar system
100
Name the inner planets.
Mercury, Venus, Earth, Mars
100
Name the outer planets.
Jupiter, Saturn, Uranus, Neptune
100
Describe an irregular galaxy.
This galaxy has no specific shape. It resembles a blob.
100
The bottom layer of the sun is the __________.
corona
200
A rocky mass up to several hundred km wide that revolves around the sun is an ___________.
asteroid
200
Which planet is known as the Red Planet?
Mars
200
What is Polaris?
the North Star
200
A natural object that revolves around a planet is a ________.
moon
200
The top layer of the sun is the ___________.
photosphere
300
A meteor that hits Earth is called a _______________.
meteorite
300
Name the similarities of the inner planets.
They are warm planets, close to the sun, and have rocky surfaces.
300
Name the similarities of the outer planets.
They are gas giants, further from the sun, and have colder temperatures.
300
This galaxy has tendrils sticking out of its middle.
A spiral galaxy
300
The second layer of the sun is the ________.
core
400
A frozen mass of rock, ice, and dust that orbits the sun is a ________.
comet
400
A _______ is a hot ball of gas that gives off energy. When these form patterns in the sky, they make _____________.
star, constellations
400
A __________ is an object that travels around a star is a path. The path it takes is called its _________.
planet, orbit
400
A collection of gas, dust, stars, and other objects that are held together by gravity is a __________. Our home one is the Milky Way.
galaxy
400
The sun is an ____________ sized star.
average
500
An explosive eruption of waves and particles into space is a ____________.
solar flare
500
What keeps the planets in orbit? Be specific!
The sun's gravity
500
Why are Uranus and Neptune's atmospheres a bluish color?
They have methane in their atmospheres.
500
Describe an elliptical galaxy.
It has an oval shape.
500
Dark spots that move on the face of the sun are called _________.
sun spots