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Force and motion review

Total questions: 60

Worksheet time: 4hrs 55mins

Name
Class
Date
1.
The term for when an object speeds up, slows down, or changes direction
a)
Speed
b)
Velocity
c)
Acceleration
d)
Newtons
2.
How much force is required to accelerate 10 kg at a rate of 100 m/s2?
a)
1,000kg
b)
10N
c)
10kg
d)
1,000N
3.
What is the acceleration of a 50 kg object pushed with a force of 2,500 newtons?
a)
75,000N
b)
50N
c)
2500N
d)
50m/s2
4.
18 km/s in a northerly direction is an example of
a)
velocity
b)
Speed
c)
acceleration
d)
momentum
5.
The net force of the following diagram is
a)
20 N
b)
Moving to the left
c)
Balanced forces
d)
160 N
6.
Which graph best represents a graph of a car travelling down a freeway at a CONSTANT speed?
a)
A
b)
B
c)
C
d)
D
7.
If a 100 N force acts on a 50 kg car, what will the acceleration be? ( F= m x a)
a)
500m/s2
b)
2m/s2
c)
50m/s2
d)
150 m/s2
8.
The snail is traveling at 5 cm/hr. This is an example of
a)
speed
b)
forces
c)
acceleration
d)
velocity
9.
The runner's motion as they turned the curve to pass the baton is best described as
a)
speed
b)
force
c)
acceleration
d)
velocity
10.
The net force of the following diagram is
a)
620N→
b)
To the right→
c)
20N←
d)
balanced↔
11.
A satellite orbits the Earth at a constant speed. The forces that maintain the constant speed must be -
a)
BALANCED
b)
UNBALANCED
c)
CANCELLED
d)
DISPLACED
12.
Roller coasters use potential and kinetic energy to move carts around the track. Which selection below organizes the points of potential energy from GREATEST to LEAST?
a)
6,4,1
b)
1,4,6
c)
2,3,5
d)
5,3,2
13.
Potential energy refers to objects that have ________________________ .
a)
changing chemically
b)
stored energy
c)
in motion
d)
changing electrically
14.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
15.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
16.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
17.
A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
18.

Two identical bowling balls are rolled down the lane. One is given a stronger force. Predict what will happen.

a)

The one with the stronger force will roll at a slower speed.

b)

The one with the stronger force will roll at a faster speed.

c)

They will roll at the same speed because force doesn't impact speed.

19.

Forces are measured in ________________.

a)

grams

b)

meters

c)

Newtons

d)

Joules

20.

If balanced forces are acting on an object, there is_______________.

a)

no change in motion

b)

a faster motion

c)

no motion at all

21.

If two people are arm wrestling and there is a tie, this means...

a)

the net force is zero.

b)

the net force is positive.

c)

there are no forces acting upon the arms.

22.

An object at rest tends to stay at rest OR an object in motion will stay in motion with no change unless a force acts upon it.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

23.

For every action, there is an equal and opposite reaction.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

24.

If a person is rowing in a canoe, they place their paddle in the water to row and the boat moves forward. Identify the action and reaction forces.

a)

Action: Boat moves forward, Reaction: Paddle is placed in water

b)

Action: Person puts a force on the water with paddle. Reaction: Water pushes boat forward

c)

Action: Water pushes boat forward. Reaction: Paddle pushes water backward.

25.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
26.
How is gravity affected by mass?
a)
the larger the mass of the object, the greater the gravity
b)
small objects have no gravity
c)
gravity is not affected by mass of objects, whether large or small
27.
What kind of energy does the big rock hold?
a)
kinetic
b)
chemical
c)
potential
d)
nuclear
28.
If the man and the ball travels 90 m in 9 seconds, what is their average speed?
a)
10 m/s
b)
99 m/s
c)
180 m/s
d)
10 meters
29.
This game of tug of war is an example of _________ forces. 
a)
unbalanced
b)
balanced
c)
potential
d)
net zero
30.
If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
31.
A baseball is thrown a distance of 50 meters. What is the speed if it takes 2 seconds to cover that distance?
a)
100 m/s2
b)
25 m/s2
c)
52 m/s2
d)
100 seconds
32.
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more mass and requires more force to accelerate.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
33.
This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
34.
When you step on a Lego. You push on the Lego and the Lego pushes back on you.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
35.
How much time does it take for a car travelling at 65 miles/hour to travel 300 miles?
a)
4.6 hours
b)
0.22 hours
c)
19,500 hours
d)
none of the above
36.
Net force?
a)
41 N Down
b)
25 N Down
c)
16 N Up
d)
9 N Down
37.

You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?

a)

60 N right

b)

10 m left

c)

100 n right

d)

50 N left

38.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
39.

When objects remain in the same place, it is called...

a)

gravity

b)

friction

c)

balanced forces

d)

unbalanced forces

40.

Speed can be found by calculating...

a)

acceleration/ velocity

b)

friction/ gravity

c)

momentum/ time

d)

distance/ time

41.

Hanna's mom drives north for 2 hours going 70 miles per hour. She then drives west for 3 hours going 50 miles per hour. How many miles has Hanna's mom driven in all?

a)

200 miles

b)

250 miles

c)

290 miles

d)

300 miles

42.

A car takes 3 hours to travel 180 miles at a constant speed. How fast is the car traveling?

a)

30 mph

b)

50 mph

c)

60 mph

d)

90 mph

43.
A nonliving element in an ecosystem is an 
a)
animal
b)
abiotic factor
c)
biotic factor
d)
organism
44.
A living or once-living organisms in an ecosystem is a
a)
population
b)
biotic factor
c)
abiotic factor
d)
community
45.
Which of the following is not a biotic factor?
a)
mushroom
b)
air
c)
elephant
d)
coyote
46.
Which of the following is not an abiotic factor?
a)
sun
b)
temperature
c)
soil
d)
grass
47.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
48.
a)
Mayflies that were previously abundant are no longer present in the stream
b)
Stone flies and midges thrive and compete for the same food source
c)
Large numbers of crayfish are suddenly dead
d)
Riffle beetles have become more abundant in the stream
49.
a)
The soot-covered trees camouflaged the dark moths
b)
The dark moths prey on the light moths
c)
Bird populations increased in the area near the factories
d)
The dark moths laid fewer eggs than the light moths
50.
If humans cleared a forest to build homes, we would expect _____________.
a)
fewer tree-dwelling animals
b)
increased insect populations
c)
more development of soil
d)
more frequent thunderstorms
51.
Raccoons eat aquatic animals. If chemicals entered the lake with rain water and destroyed the plants, how would this impact the raccoon population?
a)
Raccoons would have more aquatic animals to eat.
b)
Raccoons would begin eating land plants.
c)
Raccoons would have less aquatic animals to eat.
d)
Raccoons would only drink water.
52.
Scientists are concerned about overfishing of shark populations. Sharks feed on rays and rays feed on scallops. Without sharks, rays consume all the scallop beds. This situation demonstrates that: 
a)
humans can improve an ecosystem by removing predators.
b)
humans can upset an ecosystem by removing species.
c)
reducing the shark population increases the quantity of scallops that can be taken.
d)
sharks are not important for the stability of the ecosystem.
53.
A foreign insect is introduced into the Texas. It eats a lot of leaves, and trees start to become leafless. Many different animals feed on the new insect, but even they cannot control its numbers. Eventually, trees begin to die. Why would a rapid increase of the new insect population cause certain species of herbivores to vanish or be fewer in number?
a)
They would not have enough to eat. 
b)
They would not have enough space to live.
c)
They would not have tree bark to eat.
54.
What does biodiversity mean?
a)
Only one species in an area.
b)
The different amount of species in an area
c)
All abiotic life
d)
Nitrogen fixation
55.
Who causes the most damage to coral reefs?
a)
Whales
b)
Fish
c)
Boats
d)
Humans
56.
taking more fish out of an ecosystem than can be replaced by the reproductive rates of the remaining populations.
a)
extint
b)
fishing
c)
over fishing
d)
over population
57.
a)
Soil
b)
Sunlight
c)
Water
d)
Oxygen
58.
(8.11A) In the aquatic food web below, which two organisms have a predator-prey relationship?
a)
Shad and sturgeons
b)
Sturgeions and blue crabs
c)
Blue crabs and rangia clams
d)
Copepods and amphipods
59.
(8.11C) Some scientists studying aquatic plants notice that flooding often leads to a decrease in the rate of photosynthesis among aquatic plants. Flooding causes more sediment to be suspended in the water. The increased sediment concentration decreases the amount of light that reaches the plants. Why does a decreased rate of photosynthesis lead to a decrease in a plant population?
a)
Less water is available for absorption.
b)
Less tissue is available for plant growth.
c)
Less energy is available for reproduction.
d)
Less soil is available for leave development.
60.
Humans often change ecosystems as a result of population growth, consumption, and technology. Which of the following exemplifies a way in which humans modify ecosystems? 
a)
factory and automotive emissions causing acid rain 
b)
redirecting and storing freshwater behind dams 
c)
cutting down trees to build new buildings and roads 
d)
all of these