Multiple Choice
Identify the choice
that best completes the statement or answers the question.
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1.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
Why are mass and distance two key important concepts regarding gravity?
a. | Because an object with no mass has more gravity and the effect of gravity always
increases when objects are farther away. | b. | Because an object with more mass has more
gravity and the effect of gravity increases or decreases depending on the
distance | c. | Because an object with less mass has more gravity and the effect of gravity increases
or decreases depending on the distance |
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2.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
Scientists observe a distant star and the four
planets that orbit the star. They determine that the four planets have different diameters, but
approximately the same mass. This star system is represented by the diagram
below.
Which planet has the
greatest gravitational
attraction to the star?
a. | Planet
2 | b. | Planet
1 | c. | Planet
3 |
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3.
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SPI 0807.12.5 (Gravity: Mass and
Distance)
A person that weighs 150 pounds on Earth might only weigh 95 pounds on the moon.
Explain why gravity is stronger on Earth than it is on the Moon.
a. | Earth has more mass than the
Moon. | b. | The moon has a lower surface
temperature. | c. | Earth is closer to
the sun than the Moon. |
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4.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
The
Moon | Saturn | Earth | | | | Mass: 0.0123
ME | Mass: 95.159 ME | Mass: 1.000
ME | | | |
Examine the
diagrams displayed above: (1) The Moon, (2) Saturn, and (3) The Earth.
Which of these
celestial objects has the GREATEST amount of gravity and why?
a. | Saturn has the least gravity because it has the largest amount of
mass. | b. | Saturn has the greatest gravity because it has the largest amount of
mass. | c. | The Moon has the least gravity because it has the smallest amount of
mass. |
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5.
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SPI 0807.12.5 (Gravity: Mass and
Distance)
When will the gravitational attraction be greatest between two
baseballs, each with the same mass?
a. | when they are 1 meter apart | b. | when they are 10 meters apart | c. | when they are 20 meters apart |
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6.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
Diagram
01 | | | | | The Sun | Planet Mercury | Planet Venus | Planet Earth | | | | |
Examine the diagram above showing the first three planets in our solar
system. Note that the sun’s gravitational pull on planet Mercury is greater than the
gravitational pull on planet Venus.
Why is this true?
a. | The rotational speed of Mercury is faster than Venus’ rotational
speed. | b. | Earth has more mass than planet Mercury | c. | Mercury is closer to the sun than planet
Venus |
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7.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
Which of these
affects the strength of the gravitational force between Earth and the moon?
a. | the movement of molten
metals in the core of Earth | b. | the mass of the moon and mass of the Earth | c. | the tilt of the axis of
Earth |
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8.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
Look
at the solar system illustration shown above. Gravity from the sun affects all of these celestial
objects.
Which celestial object in this illustration will the sun’s gravity LEAST
affect?
a. | Nepture will be the least affected | b. | Mercury will be the least
affected | c. | Pluto will be the least affected |
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9.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
Which of these
affects the strength of the gravitational force between Earth and the sun?
a. | the tilt of the axis of
Earth | b. | the distance between Earth and the sun | c. | the amount of energy Earth receives from the
sun |
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10.
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SPI 0807.12.5 (Gravity-Mass and
Distance)
At the center of our Milky Way galaxy, there is a super-massive black hole.
The gravity from this black hole is tremendous. Yet planet Earth is in no danger from this huge black
hole.
Select the answer that correctly explains this.
a. | This black hole’s mass is 3 million times greater than our sun. So it is
no danger to us. | b. | The affect of gravity decreases over distance, and this black hole is very far
away. | c. | Unlike other celestial objects, black holes do not have any
gravity. |
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