8.7 Question Preview (ID: 50076)
8.7.
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Which force helps keep Earth in its orbit around the Sun?
a) Repulsion between Earth and the Sun due to their masses
b) Attraction between Earth and the Sun due to their masses
c) Repulsion between Earth and the Sun due to their magnetic field
d) Attraction between the Earth and the Sun due to their magnetic fields
The Sun's mass is so great that its ____________ keeps the planets in our solar system in orbit.
a) gravitational force
b) extreme temperature
c) energy output
d) ultraviolet rays
How many times does the Earth rotate in 48 hours?
a) 1
b) 2
c) 24
d) 29
The Earth rotates in which direction?
a) clockwise
b) counter clockwise
c)
d)
In the Northern Hemisphere, which direction does the Earth's axis point during the summer?
a) towards the sun
b) towards the moon
c) away from the sun
d) away from the moon
A student models Earth's motions in space using a globe and a lamp. Which action would best model that causes day and night on Earth's surface?
a) Spinning the globe on its axis near the lamp
b) Holding the axis of the globe at a tilted angle
c) Walking the globe in a large circle around the lamp
d) Walking the lamp in a small circle around the globe
What phase of the moon occurs approximately 14 or 15 days after a new moon?
a) A new moon which occurs 29-30 days after the previous new moon
b) A first quarter moon which occurs 7-8 days after a new moon
c) A waxing crescent moon which occurs a few days after a new moon
d) A full moon which occurs about half a lunar cycle after a new moon
Which phase of the lunar cycle occurs after a first quarter moon?
a) waxing crescent
b) waning crescent
c) waxing gibbous
d) waning gibbous
The best time to sail your boat through a narrow channel is when the water is highest. This means you should sail during ...
a) neap high tide, when the sun, earth, and moon are all in alignment
b) neap low tide, when the sun, earth, and moon are in an L-shaped configuration
c) spring high tide, when the sun, earth, and moon are all in alignment
d) spring low tide, when the sun, earth, and moon are in an L-shaped configuration
Which type of tide would occurs when the sun, earth, and moon are in an L-shaped configuration
a) neap tide
b) spring tide
c)
d)
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