Why do planets further from the sun take longer to complete their orbit around the sun?

they have a greater distance to travel

grouping of stars, dust, and gas held together by gravity

Gravity can act between objects across great distances. Which observation supports this?

Neptune revolves around the sun.

The greatest difference between heliocentric and geocentric models is

the sun and Earth's location and motion

Why did the comet Shoemaker crash into Jupiter?

because of Jupiter's gravitational pull

What effect does gravity have on a solar system?

it keeps the planets orbiting the sun

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Motion in the Solar System

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Unit 3 Test Review

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Questions 17

Answers

1
Why do planets further from the sun take longer to complete their orbit around the sun?
they have elliptical orbits
they have a thicker atmosphere
they have a greater distance to travel
they have more mass
2
The tendency of an object to resist any change in its movement or condition is
inertia
weight
temperature
gravity
3
Which of the following would best show how the force of gravity can move a pencil?
Writing with the pencil
Putting the pencil on a table
Dropping the pencil
Picking up the pencil
4
Define a galaxy.
space and everything in it
grouping of planets held together by the sun
interstellar gas and dust
grouping of stars, dust, and gas held together by gravity
5
Which of these objects was first used by scientists to observe the Solar System?
thermometer
telescope
microscope
space shuttle
6
According to the law of inertia, the motion of an object will change when
there is no gravity
traveling at the speed of light
coasting at a constant speed
an unbalanced force is applied
7
Why are planets spherical in shape?
plate tectonics
magnetism
gravity
the composition of the planets
8
How does the gravitational pull of our moon effect Earth's oceans?
high and low tides
causes the water temperature to rise and fall
keeps the water in the ocean
it has no effect
9
Gravity can act between objects across great distances. Which observation supports this?
The shorter the distance, the more gravity there is.
A pencil drops to the floor.
Neptune revolves around the sun.
Heavier objects have more gravity.
10
What happens to the weight of an object that is launched into space
it depends on the object
the weight stays constant
the weight decreses
the weight increases
11
The greatest difference between heliocentric and geocentric models is
the sun and Earth's elliptical orbits
the sun and Earth's ages
how large they are compared to Mercury
the sun and Earth's location and motion
12
Why did the comet Shoemaker crash into Jupiter?
because of Jupiter's magnetic poles
the comet was going to fast to stop
because of Jupiter's gravitational pull
because of Jupiter's atmosphere
13
What happens to the mass of an object that is launched into space?
the mass decreases
it depends on the object
the mass stays constant
the mass increases
14
What force is responsible for the motion if the objects in the galaxy?
atomic
a push or pull
gravity
the range force
15
Which is composed of ice, frozen gasses, and rocks?
asteroid
comet
meterorite
meteroroid
16
What effect does gravity have on a solar system?
it causes it to expand
it has no effect
it causes it to spin faster
it keeps the planets orbiting the sun
17
How do rockets escape the force of Earth's gravity when they are launched into space?
they are heavy enough to blast through
they avoid the mesosphere
they have an equal amount of gravity as Earth
they have powerful rockets

Motion in the Solar System Flashcards | StudBud