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Force & Motion Unit Review

Total questions: 80

Worksheet time: 3hrs 40mins

Name
Class
Date
1.
_______ is a force that acts between two objects which are touching. This force slows any movement between the two objects.
a)
pressure
b)
magnetism
c)
friction
2.
_____ is when there is a change in a object's position as compared to other objects around it.
a)
motion
b)
position
c)
speed
d)
velocity
3.
The force that pulls all objects toward each other is called_______?
a)
push
b)
pull
c)
gravity
d)
mass
4.

(2) Mrs. Giet’s class is playing tug of war at recess. They decide to play boys against girls. There are 11 girls and 6 boys. As soon as the game began, the girls were able to move the rope to their side. Why?

a)

There was an equal amount of force pulling on each side making it unbalanced.

b)

There was an equal amount of force pushing on each side making it unbalanced.

c)

There was more force on the girls side making it unbalanced.

d)

There was less force on the girls side making it unbalanced.

5.

Which of the following would it take the most force to move?

a)

a 3-pound ball

b)

a 5 pound ball

c)

a 15 pund ball

d)

a 25 pound ball

6.

Imagine you kick four balls with the same amount of force. Which one will go the farthest?

a)

a 3 pound ball

b)

a 5 pound ball

c)

a 15 pound ball

d)

a 25 pound ball

7.
The measure of the pull of gravity on an object is ___________________.
a)
motion
b)
weight
c)
speed
d)
friction
8.
Why is person B having a hard time moving down the hill?
a)
Person B has more friction than person A.
b)
Person B has the same friction as person A.
c)
Person B is out of shape.
d)
Person B has less friction has person A.
9.

James threw his car key, bookbag, and lunchbag on the counter. All three slid across the counter and stopped.


When object stopping point was the furthest from where James tossed them?


a)

The bookbag

b)

The lunchbag

c)

Car keys

d)

All three were the same.

10.
This graph represents speed that is...
a)
Increasing at a constant speed
b)
Increasing gradually
c)
Stationary
d)
Increasing rapidly
11.

6.8D- During a science experiment, a student dropped a metal ball from a height of 150 m. The graph shows the distance the metal ball traveled from its initial position to where it hit the ground.


What information does the graph give you about the speed of the metal ball over time?

a)

The ball travels at a constant speed.

b)

The speed of the ball increases over time.

c)

The speed of the ball decreases over time.

d)

e speed of the ball increases at first, and then decreases as time increases.

12.

Which measurements do you need to determine the speed of an object?

a)

time and position

b)

position and distance

c)

distance and force

d)

time and distance

13.

The graph below represents the time and distance traveled by four different toy cars.


6.8C- Which car went the furthest distance (ft)?

a)

Car A

b)

Car B

c)

Car C

d)

Car D

14.

The graph below represents the time and distance traveled by four different toy cars.


6. 8C- Which car traveled the longest amount of time (s)?

a)

Car A

b)

Car B

c)

Car C

d)

Car D

15.

Light-years is a unit of distance to measure distance in space. The Star Trek Voyager is travelling 30 light years in 3 seconds. What is its speed? SPEED=Distance/Time

a)

10 light years/second

b)

9.5 light years

c)

7 light years

16.

Newton's 1st Law of Motion: (An object in motion will stay in motion, and an object at rest will stay at rest; unless acted on by a force.)

a)

Inertia

b)

Acceleration

c)

Action and Reaction

17.

Newton's 2nd Law of Motion: (Forces can slow down, speed up, or change direction of an object.)

a)

Inertia

b)

Acceleration

c)

Action and Reaction

18.
When a bird flies, its wings push air downward. As a result the air pushes back upward on the bird. Which law of motion most applies to the way the wings of a bird beat? 
a)
Every action has an equal and opposite reaction
b)
The rate of acceleration of an object depends on the amount of force applied.
c)
Objects in motion tend to remain in motion until acted upon by an another force. 
d)
Force is defined by mass times acceleration
19.

6. 8CD- The graph below shows the distance a car traveled in 5 seconds while moving on a freeway.


What was the car’s average speed?

a)

0 m/s

b)

14 m/s

c)

28 m/s

d)

30 m/s

20.

At 60 seconds, how far had this object traveled?

a)

0 m

b)

10 m

c)

20 m

d)

40 m

21.

On which surface will a toy sledge travel the least distance?

a)

Carpet

b)

Wood

c)

Ice

22.
The rougher the surface, the faster an object will travel over the surface.
a)
True
b)
False
23.

If two boxes are pushed with the same amount of total force, and one weighs 1kg and the other weighs 100kg, which one will accelerate faster?

a)

1kg box

b)

100 kg box

c)

they will accelerate at the same rate

24.
A _____ is a pull or a push.
a)
force
b)
friction
c)
gravity
d)
speed
25.

A ball is rolled on four different types of surfaces. Which would have the least amount of friction between it and the ball?

a)

ice

b)

grass

c)

carpet

d)

wood floors

26.

The tendency of an object that is at rest to stay at rest or if in motion to stay in motion is

a)

momentum

b)

speed

c)

inertia

d)

velocity

27.

Mrs. Hickner rode her bike at a constant speed a half maile to school. Halfway to school, she stopped to send a text message to a friend. AFter finishing her text messge, Mrs. Hickner continued to rid her bike at a constatn speed the rest of the way to school

a)

Graph 1

b)

Graph 2

c)

Graph 3

d)

Graph 4

28.
A cold front usually brings what kind of weather?
a)
snow  
b)
sunny and fair
c)
heavy rain and/or thunderstorms 
d)
 cool and dry 
29.

What is the purpose of a barometer?

a)

Tells you that it is going to rain.

b)

Measures the amount of wind.

c)

Measusres the amount of clouds in the sky.

d)

It measure the amount of pressure in the air.

30.
Which weather tool measures wind?
a)
anemometer
b)
therometer
c)
wind vane
d)
barometer
31.
The weather forecast tomorrow says there will be a 15 mph wind, a high temperature of 52 degrees and a pressure of 720 mb. What three instruments will a meteorologist use to make this prediction?
a)
anemometer, barometer, thermometer
b)
barometer, hygrometer, thermometer
c)
thermometer, satellite image, hygrometer
d)
anemometer, satellite image, barometer
32.
This is sometimes called a thunderhead cloud. It looks very tall like mountains and heavy rain comes from it. 
a)
Cumulus
b)
Cirrus
c)
Stratus
d)
Cumulonimbus
33.
In which direction do weather patterns move in the USA?
a)
north to south
b)
south to north
c)
west to east
d)
east to west
34.
What is the name of the wind that brings all weather systems to NC?
a)
polar easterlies
b)
tropical westerlies
c)
prevailing westerlies
d)
prevailing easterlies
35.
When reading the barometer, the air pressure is dropping.  What weather should you expect?
a)
cloudy and chance of rain
b)
warm and clear
c)
windy and clear
d)
sunny and cold
36.
The eastern USA is affected by the Gulf Stream.  What is its affect on the local weather?
a)
it causes a decrease in temperatures
b)
it causes an increase in temperatures
c)
creates dry weather
d)
it moves winds over NC
37.
Which will most likely result from a low-pressure weather system?
a)
warm temperatures
b)
cloudy conditions
c)
clear conditions
d)
cool temperatures
38.
Which is the best explanation for how air masses move across the United States?
a)
The prevailing westerlies move air masses from west to east across the United States but may be deflected by the jet stream.
b)
The trade winds move air masses from west to east across the
United States.
c)
The jet stream moves air masses from the Pacific Ocean across the
United States.
d)
The warm air of the Gulf Stream causes air masses to move from the
Atlantic Ocean to the Pacific Ocean.
39.
Which has the greatest effect on wind speed?
a)
precipitation
b)
cloud cover
c)
wind direction
d)
air pressure
40.
On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?
a)
stormy
b)
sunny
c)
snowy
d)
hot
41.
The weather forecast indicates that a warm front will be moving into the area in the next 24 hours. Which type of weather will most likely result?
a)
clear skies and cold temperatures
b)
clear skies and hot temperatures
c)
cloudy skies and rainy weather
d)
heavy snow and ice
42.
What is the cause of rising surface temperatures of the Pacific Ocean, drought in the western United States, and flooding on the Pacific coast of South America?
a)
the Gulf Stream
b)
the jet stream
c)
La Niña
d)
El Niño
43.

Which is most responsible for the changes in seasons?

a)

the jet stream

b)

the ocean currents

c)

the distance from Earth to the Sun

d)

the tilt of the Earth on its axis

44.

One morning, a student notices that the grass in the area is wet, although it had not rained during the night. What could have caused the grass to be wet?

a)

During the night, water had evaporated from the trees in the area.

b)

The air above the ground became warmer during the night and caused precipitation.

c)

When the air cooled above ground during the night, water vapor condensed on the grass.

d)

The grass soaked up water from the ground during the night.

45.

Which best describes a hurricane?

a)

a low-pressure weather system

b)

a high-pressure weather system

c)

a cold front

d)

a stationary front

46.
Which describes a wind that moves FROM the land to the sea during the night?
a)
sea breeze
b)
land breeze
c)
desert breeze
d)
trade wind
47.

Water droplets forming on the outside of a cold glass of water on a hot, summer day is an example of which part of the water cycle?

a)

condensation

b)

evaporation

c)

transpiration

d)

radiation

48.
Which describes a wind that moves from the sea to the land during the day?
a)
sea breeze
b)
land breeze
c)
lake breeze
d)
polar breeze
49.
Which weather pattern is true near the equator?
a)
temperatures are consistently warm year round
b)
temperatures vary with seasons
c)
really cold in the winter, but hot in the summer
d)
really cold in the summer, but hot in the winter
50.
How would the woodpecker population in a forest area most likely be affected if a housing development is built in that area?
a)
They would produce more offspring.
b)
They would change the color of their feathers.
c)
They would experience a decrease in available food.
d)
They would experience a decrease in competition.
51.

Which best explains why producers are an important part of an ecosystem?

a)

They pass the Sun´s energy on to other organisms.

b)

They pass energy from consumers to decomposers.

c)

They make their own energy and pass it on to other producers.

d)

They pass energy from first level consumers to second level consumers.

52.

Which best describes the role of both mushrooms and worms in an ecosystem?

a)

They provide food for carnivores.

b)

They provide food for herbivores.

c)

They provide nutrients for the soil.

d)

They provide nutrients during photosynthesis.

53.

Which is a difference between a tropical rainforest and a deciduous forest?

a)

A tropical rainforest is smaller in size than a deciduous forest.

b)

A tropical rainforest receives more sunlight than a deciduous forest.

c)

A tropical rainforest receives a greater annual precipitation than a deciduous forest.

d)

A tropical rainforest has a greater number of rivers and lakes than a deciduous forest.

54.

What is the main difference between marine and freshwater ecosystems?

a)

the amount of animals

b)

the amount of plants

c)

the amount of rocks

d)

the amount of salt

55.

Which type of ecosystem can be found in the mountain region of North Carolina?

a)

estuary

b)

grassland

c)

deciduous forest

d)

tropical rain forest

56.

Which is a difference between abiotic and biotic factors?

a)

Abiotic factors are plants and biotic factors are animals.

b)

Biotic factors are plants and abiotic factors are animals.

c)

Abiotic factors are all living things and biotic factors are all nonliving things.

d)

Abiotic factors are all nonliving things and biotic factors are all living things.

57.

Which animal would you most likely find in a deciduous forest?

a)

bison

b)

deer

c)

duck

d)

panther

58.

Joey was walking through a forest when he looked up and saw a monkey being chased by a panther. Which type of forest was he most likely visiting?

a)

rainforest

b)

deciduous forest

c)

coniferous forest

59.

What does the terrestrial mean?

a)

water

b)

land

c)

alien

d)

filth

60.

Which is a main difference between a grassland and forest ecosystem?

a)

the amount of trees, as forests have more

b)

the amount of trees, as grasslands have more

c)

their location, as only forests are found in North America

d)

their location, as only grasslands are found in North America

61.

Jacob is traveling within the United States and encounters prairie dogs, flat lands, and large areas of short grass. Through which ecosystem is Jacob most likely traveling?

a)

desert

b)

grassland

c)

deciduous forest

d)

tropical rain forest

62.

Which two ecosystems have little or no rainfall?

a)

deciduous forest and tropical forest

b)

tropical forest and grassland

c)

desert and deciduous forest

d)

grasslands and desert

63.

Which best explains why a hot air balloon floats?

a)

The heated air expands to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.

b)

The heated air expands to fill the balloon. The air in the balloon is now heavier than the surrounding air, causing the balloon to rise.

c)

The heated air contracts to fill the balloon. The air in the balloon is now denser than the surrounding air, causing the balloon to rise.

d)

The heated air contracts to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.

64.

Jordan places a hot spoon into a container of ice cream. how does this help him scoop out the ice cream?

a)

The coolness from the ice cream is conducted to the spoon making it easier to scoop out.

b)

The coolness from the ice cream is radiated to the spoon making it easier to scoop out.

c)

The warmth of the spoon is conducted to the ice cream making it easier to scoop out.

d)

The warmth of the spoon is radiated to the ice cream making it easier to scoop out.

65.

How does heat move?

a)

from a warmer to a cooler object

b)

from a cooler to a warmer object

c)

toward a hot object

d)

away from a cold object

66.
Which of the following is NOT an insulator?
a)
Wool
b)
Plastic
c)
Copper
d)
Styrofoam
67.
A great conductor of energy is:
a)
wood
b)
plastic
c)
metal
d)
cloth
68.
All of the following are conductors except _______.
a)
metal spoon
b)
wire
c)
iron nail
d)
plastic spoon
69.

the transfer of heat in a fluid (gas or liquid) by means of up & down movements called convection currents

a)

conduction

b)

convection

c)

radiation

70.

Hot water rises and cold water sinks. Is this:

a)

Convection

b)

Conduction

c)

Radiation

71.
The man takes the hot pot off the stove with his bare hands and his hands get burned.  This is an example of 
a)
conduction
b)
convection
c)
radiation
72.
A group of friends gather around a fire to stay warm.  This is an example of
a)
conduction
b)
convection
c)
radiation
73.
A metal spoon heated by hot soup.  This is an example of
a)
Conduction
b)
Transpiration
c)
Convection
d)
Radiation
74.
Near the ceiling of a room the air is warmer; the warm air rises because of
a)
conduction
b)
convection
c)
radiation
75.
In which way are evaporation and condensation similar?
a)
Both cause decreases in air temperature.
b)
Both cause increases in air temperature.
c)
Both are caused by the warming of the atmosphere.
d)
Both are caused by changes in heat energy.
76.
Which is an example of a different substance being formed?
a)
glass breaking
b)
metal melting
c)
water freezing
d)
wood burning
77.
If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
a)
2 grams
b)
5 grams
c)
10 grams
d)
15 grams
78.
What must occur before clouds can form?
a)
Water vapor must get warmer.
b)
Water vapor must lose heat energy.
c)
Precipitation must begin to fall and run off.
d)
Transpiration must add water vapor to the atmosphere.
79.
Which statement best describes why baking a cake is an example of a chemical change? 
a)
The process takes place in an oven. 
b)
The process requires heat energy. 
c)
The process cannot be reversed. 
d)
The process can be repeated. 
80.

Which change is most likely to produce a new substance?

a)

a piece of paper burning

b)

sugar dissolving into water

c)

glass breaking into many pieces

d)

water boiling and creating steam