WorksheetsCh 9 L 1 Our Solar System
Total questions: 9
Worksheet time: 45mins
Name
Class
Date
1.
Our solar system includes the sun, the ______, and many smaller objects.
a)
stars
b)
planets
c)
moons
2.
One way scientists measure distances in space is by using the...
a)
light-year.
b)
light-minutes.
c)
atronomical unit.
3.
Another way to measure distances in space is by using the speed of __________.
a)
light
b)
sound
c)
comets
4.
Light travels _________ in space.
a)
3,000 km/s
b)
30,000 km/s
c)
300,000 km/s
5.
Distances in the solar system can be measured in light-minutes and ________________.
a)
light-seconds
b)
light-days
c)
light-hours
6.
The solar system is divided into ________ main parts.
a)
three
b)
two
c)
four
7.
The inner planets are known as the _________ planets.
a)
terrestrial
b)
gaseous
c)
water
8.
The outer planets are large and composed mostly of ______.
a)
water
b)
gases
c)
rocks
9.
The planets of the outer solar system are the farthest from the _____.
a)
Earth
b)
moon
c)
sun
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