Vocabulary
Earth Rotates
Earth Revolves
Stars and the Moon
The Moon
100
Earth spins around on its...
Axis
100
Why do we have one period of daylight and one period of night every 24 hours?
Because Earth rotates on its axis every 24 hours.
100
How long does it take Earth to make one complete revolution?
One year, 365 days
100
What kind of tools help people see objects that are very far away?
Telescopes and binoculars.
100
Why do we see different amounts of the lighted side of the moon?
Because the moon is revolving around Earth.
200
The moon ___________ around Earth.
Revolves
200
What do you notice about Earth's axis? Is it straight up and down or is it tilted?
It is tilted.
200
What remains the same even as Earth revolves around the sun?
Earth stays tilted.
200
What kinds of movements does the moon make about once each month?
During a month, the moon rotates and revolves once around Earth.
200
How are the moon's rotation and its revolution around Earth similar?
They both take about 4 weeks.
300
Day and night happen because Earth....
rotates.
300
In what direction does the sun appear to move?
From East to West. (The Earth rotates from west to east)
300
If you said the Earth's revolution around the sun started in March, about how far around the sun is Earth by December?
About three quarters of its yearly revolution.
300
How are Earth and the sun and moon alike and different?
Earth, the sun, and the moon move around in space in cycles. Earth and the moon revolve around the sun, but the moon also revolves around Earth. The sun is made of hot gases, but Earth and the moon are made of rock.
300
Why is Orion said to be a winter star pattern in the United States?
It's seen in winter because that's when the night side of Earth containing the United States faces Orion's area in the sky.
400
What an object moves around another object it...
revolves.
400
How has Earth's rotation affected shadows by late in the day?
Shadows are long and stretch toward the east because Earth has continued to turn, causing the sun to appear in the west.
400
What is the difference between Earth's rotation and Earth's revolution?
Earth rotates on its axis and revolves around the sun.
400
How does the moon look different as it goes through its phases? a. its light gets brighter, then dimmer. b. it moves from low in the sky to high. c. it changes from a small circle to a large circle. d. Its shape changes from a thin crescent to the whole moon.
D. Its shape changes from a thin crescent to the whole moon.
400
Why does the moon appear to change shape?
Because we see changing amounts of its lighted side as it revolves around Earth.
500
An imaginary line that runs through Earth's poles is its...
axis.
500
How does Earth's rotation cause day and night?
The part of Earth facing the sun has day. As Earth rotates, that part of Earth turns away from the sun and has night.
500
How do you know Earth is moving around the sun?
The seasons change each year.
500
What causes craters?
Space rocks smashing into the moon.
500
Suppose there is a full moon tonight. What phase will the moon be in about 8 weeks?
Full Moon
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