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WorksheetsCh. 17 Earth in Space Test
Total questions: 22
Worksheet time: 16mins
Name
Class
Date
1.
A frozen mass of ice and dust orbiting the Sun:
a)
rotation
b)
comet
c)
axis
d)
solar system
2.
An object in orbit around another object:
a)
solar system
b)
space probe
c)
Moon phase
d)
satellite
3.
The Sun and all the bodies that orbit it:
a)
solar system
b)
revolution
c)
comet
d)
Moon phase
4.
A rocky mass up to several hundred kilometers wide that revolves around the Sun:
a)
axis
b)
rotation
c)
asteroid
d)
space probe
5.
One full orbit of an object around another object:
a)
revolution
b)
rotation
c)
space probe
d)
satellite
6.
One whole spin of an object on its axis:
a)
revolution
b)
axis
c)
rotation
d)
Moon Phase
7.
The fraction of the Moon that is illuminated as seen from Earth:
a)
solar system
b)
axis
c)
asteroid
d)
Moon phase
8.
A spacecraft that gathers data without a crew:
a)
space probe
b)
asteroid
c)
comet
d)
Moon phase
9.
An imaginary center line around which the Earth rotates:
a)
revolution
b)
axis
c)
space probe
d)
satellite
10.
The orbit of Earth around the Sun is:
a)
circular
b)
irregular
c)
elliptical
d)
triangular
11.
What do Jupiter, Saturn, Uranus, and Neptune have in common?
a)
They all have rocky surfaces.
b)
They are all gaseous planets.
c)
They all appear to be similar to Earth.
d)
They all appear to be made of rock and ice.
12.
What causes the temperatures at the North and South Poles to remain so cold throughout the year?
a)
the tilt of Earth on its axis
b)
the distance between Earth and the Sun
c)
the speed at which Earth moves around the Sun
d)
the length of time it takes for Earth to turn on its axis
13.
Which choice below gives the correct order of planets from the Sun?
a)
Mars, Venus, Earth, Saturn
b)
Earth, Mars, Venus, Jupiter
c)
Mercury, Venus, Earth, Mars
d)
Uranus, Jupiter, Neptune, Saturn
14.
Choose the words that belong in the sentence.
In a 24-hour period, Earth completes one _________ on its ____________.
In a 24-hour period, Earth completes one _________ on its ____________.
a)
rotation, axis
b)
rotation, orbit
c)
revolution, axis
d)
revolution, orbit
15.
A student says that she saw a shooting star in the sky last night. What did she really see?
a)
a star
b)
a meteor
c)
an asteroid
d)
a meteoroid
16.
Why do craters last for millions of years on the surface of the Moon?
a)
The wind on the Moon is high in the atmosphere.
b)
The Moon has no water or wind to erode the craters.
c)
The Moon's surface is so hard the craters do not change.
d)
The Moon's surface is made of materials that are resistant to change.
17.
During which phase of the Moon is the Moon passing between Earth and the Sun?
a)
full Moon
b)
new Moon
c)
first quarter
d)
crescent Moon
18.
What happens to the tides when the Moon and the Sun form almost a 90° angle with Earth?
a)
The tides are at their highest.
b)
The tides are strongest.
c)
The tides are unaffected.
d)
The tides are low.
19.
Which part of the comet exists both when the comet is close to the Sun and when the comet is far away from the Sun?
a)
coma
b)
ion tail
c)
nucleus
d)
dust tale
20.
What is the center of our solar system?
a)
Earth
b)
the Sun
c)
Our Moon
d)
The asteroid belt
21.
What object in our solar system is the closest to Earth?
a)
the Sun
b)
Neptune
c)
the asteroid belt
d)
the Moon
22.
What causes Mars and Saturn to have different year lengths?
a)
The distance they are away from the Sun.
b)
The size of each planet.
c)
The amount of water or gas they have on the planet.
d)
They length of the year is the same.
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