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Worksheetsalt assignment
Total questions: 63
Worksheet time: 53mins
Name
Class
Date
1.
Almost Earth’s twin in size and mass, this planet has very thick atmosphere.
a)
Venus
b)
Mars
c)
Mercury
d)
Neptune
2.
The surface of this planet appears red due to rusting iron in the rocks.
a)
Mercury
b)
Mars
c)
Pluto
d)
Venus
3.
Some scientists believe that this dwarf planet is actually a very large comet caught in a permanent orbit.
a)
Eris
b)
Pluto
c)
Mars
d)
Neptune
4.
This cold, blue planet was discovered by a mathematical prediction.
a)
Neptune
b)
Jupiter
c)
Uranus
d)
Venus
5.
This is the smallest planet in the solar system
a)
Mercury
b)
Venus
c)
Earth
d)
Mars
6.
This has an extremely elliptical orbit -
a)
Pluto
b)
Neptune
c)
Uranus
d)
Saturn
7.
Only planet known to have life
a)
Earth
b)
Mars
c)
Venus
d)
Mercury
8.
Scientists have been able to find no atmosphere around this planet because it has little gravity and is closest to the sun.
a)
Mars
b)
Venus
c)
Mercury
d)
Earth
9.
Potential energy is transformed into kinetic
energy in which of the following scenarios?
energy in which of the following scenarios?
a)
B
b)
C
c)
D
d)
E
10.
By plugging in the stove in scenario D, a
person is hoping to create heat energy from what?
person is hoping to create heat energy from what?
a)
solar energy
b)
electrical energy
c)
mechanical
d)
chemical
11.
In all of the energy transformations shown
above, the total amount of energy:
above, the total amount of energy:
a)
disappeared when it transformed into another type
of energy.
of energy.
b)
decreased when it transformed into another type of
energy.
energy.
c)
remained the same when it transformed into
another type of energy.
another type of energy.
12.
Scenario B shows a plant using
photosynthesis to create its own food. This involves which of the following energy transformations?
photosynthesis to create its own food. This involves which of the following energy transformations?
a)
solar energy to kinetic energy
b)
solar energy to mechanical energy
c)
solar energy to chemical energy
13.
Energy of moving electrons
a)
electrical energy
b)
electromagnetic energy
c)
sound energy
d)
mechanical energy
14.
What do we call a change from one form of energy to another?
a)
Energy change
b)
Energy transformation
c)
Energy conversion
d)
Energy creation
15.
Microwaves, x-rays, ultraviolet rays, infrared waves, light waves are all examples of
a)
electrical energy
b)
electromagnetic energy
c)
chemical energy
d)
nuclear energy
16.
How does mass affect inertia?
a)
That statement is If an object has more mass, it has greater inertia. It's size makes it harder to stop. .
b)
That statement is If an object has less mass, it has greater inertia. It's size makes it harder to stop..
17.
In our solar system, an orbit is the combined effects of the gravitational force of the Sun and the __________________ ______________________of the object in space.
a)
gravitational pull
b)
distance
c)
mass
d)
forward motion
18.
The forces of ________________ and _____________________ control the orbit of a planet.
a)
gravity and motion
b)
mass and motion
c)
distance and mass
d)
gravity and distance
19.
Why does Jupiter have many moons orbiting it?
a)
far away from sun
b)
large mass
c)
gravitational pull
d)
I don't know
20.
A satellite is an object that revolves around a planet due to its ___________________________ __________________.
a)
gravitational pull
b)
forward motion
c)
large mass
d)
law of universal gravitation
21.
_______________________ are chunks of ice and dust that orbit around the Sun.
a)
asteroids
b)
comets
c)
meteors
d)
planets
22.
___________________ and _______________________ affect the strength of the gravitational pull on an object.
a)
Mass and gravity
b)
motion and distance
c)
mass and distance
d)
motion and gravity
23.
The greater an object’s mass, the _________________________ its gravity.
a)
greater
b)
faster
c)
slower
d)
decreases
24.
What is the most massive object in our solar system that we all orbit?
a)
Jupiter
b)
Neptune
c)
Earth
d)
Sun
25.
A small planet that is close to the Sun will –
a)
have a strong gravitational pull exerted on it
b)
pull several smaller planets into its orbit
c)
have too great a mass to orbit the Sun
d)
orbit in an elliptical path
26.
A friend asked a student why Earth revolves around the Sun. The student told the friend about the combined effects of the gravitational force of the Sun and the forward motion of Earth. What was the student describing?
a)
supernova
b)
rotation
c)
orbit
d)
revolution
27.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
28.
If Earth's mass was cut in half, what would happen to your mass?
a)
increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, mass is not affected by gravitational force
29.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight
d)
friction
30.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
31.
The orbital paths of objects in our solar system are the result of which of the following?
a)
The shape of the bodies and their chemical compositions
b)
The relative age of the bodies and their chemical compositions
c)
The balance between the motion of the bodies and gravitational forces
32.
The gravitational attraction between two objects is reduced most when--
a)
The masses are decreased, and the distance between them is increased
b)
The masses are increased and the distance between them is decreased
c)
The masses are decreased and the distance between them is decreased
33.
Which of the following would have the greatest gravitational attraction between the two masses
a)
Picture A
b)
Picture B
c)
Picture C
34.
If the planet Neptune's mass was reduced, which of the following could be done to maintain the same force of gravitational attraction between Neptune and the Sun?
a)
Increase the distance between Neptune and the Sun
b)
Decrease the distance between Neptune and the Sun
c)
Increase the amount of energy the Sun puts out
35.
If the planet Neptune's mass was reduced, which of the following could be done to maintain the same force of gravitational attraction between Neptune and the Sun?
a)
Increase the distance between Neptune and the Sun
b)
Decrease the distance between Neptune and the Sun
c)
Increase the amount of energy the Sun puts out
36.
The path that planets take as they orbit the center of the solar system is a result of the interaction of what two things?
a)
The forward motion of the planet and gravitational pull of the Sun
b)
The mass of the planet and the composition of its atomosphere
c)
The magnetic field generated by the planet and friction with the air
37.
The table provides info on the masses and distances of pairs of objects. In which example is the gravitational force of attraction between two objects the smallest?
a)
Example 1
b)
Example 2
c)
Example 3
38.
The gravitational attraction between two objects would increase if both masses are--
a)
Increased and the distance between them is increased
b)
increased and the distance between them is decreased
c)
decreased and the distance between them is decreased
39.
Why do planets orbit the Sun?
a)
The Sun is the only celestial object that has a gravitational pull
b)
Only celestial bodies that emit light can be at the center of an orbit
c)
The Sun is the most massive object in our solar system so it has the greatest gravitational pull
40.
If the distance between Mercury and the Sun were increased, what could be done to maintain the same gravitational force of attraction between Mercury and the Sun?
a)
Decrease the masses of Mercury and the Sun
b)
Decrease Mercury's speed of orbit around the Sun
c)
Increase the masses of Mercury and the Sun
41.
Gravity can be defined as the---
a)
Force of attraction between two or more masses
b)
friction created when two objects are in contact
c)
energy given off by starts due to nuclear reactions
42.
Which of the following would have the smallest gravitational attraction between the two masses?
a)
Picture A
b)
Picture B
c)
Picture C
43.
Which of the following governs the motion of our solar system?
a)
Magnetism
b)
Gravity
c)
Friction
44.
Planets in our solar system orbit the Sun because it--
a)
has the greatest magnetic field
b)
Is the celestial body with the greatest mass
c)
Is the brightest object in our solar system
45.
Planets in our solar system orbit the Sun because it--
a)
has the greatest magnetic field
b)
Is the celestial body with the greatest mass
c)
Is the brightest object in our solar system
46.
Which two factors affect the strength of the gravitational pull on two objects?
a)
mass and density
b)
weight and distance
c)
mass and distance
47.
The gravitational pull of the Sun affects which of the following properties of the planets in our solar system>
a)
chemical composition
b)
speed and shape of orbit
c)
formation of land features
48.
The force of gravitational attraction between the Sun and Jupiter could be increased by reducing which of the following?
a)
the mass of the Sun and Jupiter
b)
The distance between the Sun and Jupiter
c)
The speed of rotation of Jupiter
49.
The force of gravitational attraction between the Sun and Jupiter could be increased by reducing which of the following?
a)
the mass of the Sun and Jupiter
b)
The distance between the Sun and Jupiter
c)
The speed of rotation of Jupiter
50.
The gravitational pull of the Sun affects which of the following properties of the planets in our solar system>
a)
chemical composition
b)
speed and shape of orbit
c)
formation of land features
51.
Gravity is a push and a pull.
a)
True
b)
False
52.
The gravitational force between two objects will be greatest in which of the following situations?
a)
Both objects have small masses, and are close together.
b)
One object has a large mass, and the objects are close together.
c)
Both objects have large masses, and are close together.
d)
Both objects have large masses, and they are far apart.
53.
Luis rubbed a balloon on his hair and held the balloon next to the wall. He observed the balloon stick to the wall. Which of the following is responsible for the balloon sticking to the wall?
a)
gravity
b)
friction
c)
electrical force
d)
magnetic force
54.
Which of the following conditions would cause the airplane to descend toward the ground?
a)
the lift is equal to the drag
b)
the lift is less than the weight
c)
the thrust is equal to the weight
d)
the thrust is greater than the drag
55.
Moving a magnet near a compass can cause the compass needle to move, even though the magnet does not touch the compass. This observation is evidence for which characteristic of magnetic fields?
a)
They have a north and a south pole.
b)
They can be generated by electricity.
c)
They can exert a force from a distance.
d)
They are constantly changing direction.
56.
Gravity is a push and a pull.
a)
True
b)
False
57.
Multiple forces can act on the same object at the same time. When will two forces acting on the same object result in an unbalanced force on that object?
a)
when the object changes speed or direction
b)
when the object is at rest
c)
when the object doesn't change direction
d)
none of these
58.
What would happen to a football if it were thrown while in outerspace?
a)
it would fall to Earth
b)
it would remain in motion since there are no forces acting upon it
c)
it would remain at rest
d)
it would travel to Mars
59.
The illustration shows the forces in Newtons (N), acting on three different blocks. Which blocks will move under these conditions?
a)
1 and 2
b)
2 and 3
c)
1 and 3
d)
1, 2, and 3
60.
Which of the following examples best represents an object with balanced forces acting upon it?
a)
a boat moving through water
b)
a book sitting high on a shelf
c)
a wagon rolling down a steep hill
d)
a baseball thrown into the air
61.
Two horses pull in opposite directions, but together move in the direction shown. Which of the following best describes the forces being applied in this situation?
a)
The forces are balanced and the net force is zero.
b)
The forces are unbalanced and the force of horse 1 is greater.
c)
The forces are unbalanced and the force of horse 2 is greater.
d)
None of these
62.
Which of the following situations is an example of unbalanced forces acting upon an object?
a)
a rock accelerating as it rolls down a hill
b)
a rope being pulled from both sides with equal force
c)
a car moving constantly at 50 miles per hour (mph)
d)
a science textbook lying on the floor
63.
Which of the following situations is an example of unbalanced forces acting upon an object?
a)
a rock accelerating as it rolls down a hill
b)
a rope being pulled from both sides with equal force
c)
a car moving constantly at 50 miles per hour (mph)
d)
a science textbook lying on the floor
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