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Solar System
Test Description: Solar System
Instructions: Answer all questions to get your test result.
1) Astronomical unit
A
The speed of light
B
The average distance between Earth and the sun, about 150 million kilometers
C
The distance between the Earth and the moon
D
The distance light travels in one year
2) light year
A
Distance that light travels in one year; about 9.46 trillion kilometers
B
the time light travels to the moon and back
C
the speed of light
D
The average distance between Earth and the sun, about 150 million kilometers
3) cosmos
A
the planets
B
outer space
C
the solar system
D
the universe
4) universe
A
totality of everything that exists, including all space, time, matter, energy, planets, stars, galaxies, intergalactic space,
B
outer space
C
the solar system
D
the planets
5) satelitte
A
an object orbiting around a moon
B
An object that moves around another object in space; the moom is a satellite of Earth
C
an object moving in a circle
D
a type of rocket
6) dwarf planet
A
an object that is too cold to be a planet
B
an object that is round, but orbits a moon
C
a tiny planet
D
An object that orbits the sun and is spherical, but has not cleared the area of its orbit.
7) plutoid
A
A dwarf planet outside the orbit of Neptune.
B
an object that is round, but doesn't orbit the sun
C
a tiny planet
D
an object that is round but orbits a moon
8) Kuiper Belt
A
an object beyond Pluto that contains many comets
B
a region of the solar system containing many meteors
C
A region of the solar system that is just beyond the orbit of Neptune and that contains small bodies made mostly of ice
D
a region between Jupiter and Mars that contains many asteroids
9) nebula
A
A collection of stars, dust, and gas bound together by gravity
B
An enormous explosion of a giant star
C
a large hot ball of gas
D
A large cloud of dust and gas in space
10) star
A
An enormous explosion of a giant star
B
A collection of stars, dust, and gas bound together by gravity
C
a large hot ball of gas
D
A large cloud of dust and gas in space
11) galaxy
A
a large hot ball of gas
B
A large cloud of dust and gas in space
C
An enormous explosion of a giant star
D
A collection of stars, dust, and gas bound together by gravity
12) supernova
A
A collection of stars, dust, and gas bound together by gravity
B
a large hot ball of gas
C
An enormous explosion of a giant star
D
A large cloud of dust and gas in space
13) black hole
A
a large hot ball of gas
B
A collection of stars, dust, and gas bound together by gravity
C
An enormous explosion of a giant star
D
An object so massive and dense that even light cannot escape its gravity.
14) Milky Way
A
A collection of stars, dust, and gas bound together by gravity
B
An enormous explosion of a giant star
C
A large spiral galaxy that is home to Earth and the rest of our solar system, and about a trillion stars.
D
An object so massive and dense that even light cannot escape its gravity.
15) star cluster
A
A large spiral galaxy that is home to Earth and the rest of our solar system, and about a trillion stars.
B
An enormous explosion of a giant star
C
A collection of stars, dust, and gas bound together by gravity
D
a collection of stars held together by gravity
16) Big Bang Theory
A
A large spiral galaxy that is home to Earth and the rest of our solar system, and about a trillion stars.
B
A large planetesimal flew close to Earth. Earth's gravity captured the object and the orbit stabilized creating the moon as w
C
The theory that the universe originated in a huge explosion that released all matter and energy.
D
a collection of stars held together by gravity
17) accreting
A
heating up
B
cooling down
C
falling apart
D
sticking together
*select an answer for all questions
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