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Why are more stars discovered today than a hundred years ago?

The length of an Earth day is determined by the time it takes for about one

Solar System Test Review

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Answers

1
The length of an Earth day is determined by the time it takes for about one
revolution of the sun
rotation of the sun
revolution of the earth
rotation of the earth
2
Why are more stars discovered today than a hundred years ago?
Many stars were listed as asteroids years ago.
Astronomers are better at predicting new stars.
More stars have formed.
Astronomers have telescopes that allow them to see more.
3
Stars appear to be different colors because...
the temperature of stars
the constellation they are apart of
The size of stars
How close they are to earth
4
Approximately how often does the Moon orbit Earth?
once a year
once a day
once an hour
once a month
5
What happens to the moon when it changes phases?
The Earth's light shines on the moon
Pieces of the moon fall off
The sun's light shines on different parts
Pieces of the moon light up
6
What is the sun?
moon
planet
constellation
star
7
Today was Kathleen's favorite holiday, Halloween. How many days until Kathleen gets to celebrate Halloween again?
365 days
420 days
30 days
270 days
8
What is Earth's position in the solar system?
between Jupiter and Mars
Between Jupiter and Saturn
between Mercury and Venus
Between Venus and Mars
9
What statement is true?
Planets orbit around the sun.
Planets orbit the moon.
Planets do not have an orbit.
Planets orbit the earth.
10
Only a small portion of the Moon is visible in the
waning crescent phase
first quarter phase
waning gibbous
third quarter
11
Which is the largest in the Earth's solar system?
Jupiter
a moon
the Sun
Earth