Quiz about Test Review - 8.1 Lessons 1-9

Question 1

Which of the following is NOT a factor that can cause objects to be damaged in a collision?

Accepted Answer

Color

Answer

Shape

Answer

Material Composition

Answer

Thickness

Question 2

During a collision, what can change in the objects involved?

Accepted Answer

Shape

Accepted Answer

Material composition

Accepted Answer

Motion

Answer

Thickness

Answer

Color

Question 3

What process occurs during a collision?

Accepted Answer

Energy transfer

Answer

Energy destruction

Answer

Light emission

Answer

Sound conservation

Question 4

What is the result of the force(s) between objects?

Accepted Answer

They push against each other

Answer

They repel each other

Answer

They cancel each other out

Answer

They attract each other

Question 5

What happens to solid objects in a collision or when other contact forces are applied to them?

Accepted Answer

They always deform elastically

Answer

They always remain unchanged

Answer

They always break apart

Answer

They always change shape

Question 6

How do solid objects behave when smaller amounts of force are applied to them?

Accepted Answer

They deform elastically & spring back to their original shape

Answer

They break

Answer

They become stronger

Answer

They deform permanently and change shape

Question 7

What factors influence how much a solid object deforms for a given force?

Accepted Answer

Material

Accepted Answer

Thickness

Accepted Answer

Mass

Answer

Color

Question 8

What is the elastic limit of an object?

Accepted Answer

The point at which it returns to its original shape

Answer

The point at which it bends

Answer

The point at which it deforms permanently

Answer

The point at which it shatters

Question 9

What happens to the strength of contact forces when 2 objects collide?

Accepted Answer

They become equal but in opposite directions.

Answer

They become unequal.

Answer

They become repulsive.

Answer

They become 0.

Question 10

What is the role of sensor in the sense of touch?

Accepted Answer

To detect different feelings like pain and temperature.

Answer

To regulate body temperature.

Answer

To receive chemical signals from the brain about how to respond.

Answer

To protect the skin from damage.

Question 11

How do touch sensors in the skin detect contact forces?

Accepted Answer

By deforming when pressure is applied.

Answer

By changing color when touched.

Answer

By emitting a sound when touched.

Question 12

Select True or False. Some objects deform a lot and some deform relatively little for the same amount of force applied to them.

Accepted Answer

True

Answer

False

Question 13

One of our vocab words is: "vector". A vector is a value that also has direction. Which of the following have we learned about that has value AND direction?

Accepted Answer

displacement

Accepted Answer

velocity

Accepted Answer

force

Answer

speed

Answer

potential energy

Question 14

Objects with more ______ or more speed have more ______, which leads to stronger ______ in a collision.

Accepted Answer

mass, kinetic energy, peak forces

Answer

mass, potential energy, peak forces

Answer

volume, kinetic energy, peak forces

Answer

mass, kinetic energy, weaker forces

Question 15

Which graph type is best for showing the relationship between mass and kinetic energy?

Accepted Answer

Scatter Plot w/ a Line of Best Fit

Answer

Circle or Pie Graph

Answer

Bar Graph

Answer

Line Graph

Question 16

Calculate the speed for a turtle that traveled 5 miles in 10 hours.

Accepted Answer

0.5 mph

Answer

50 mph

Answer

10 mph

Answer

2 mph

Answer

5 mph

Question 17

What can you conclude about the materials based on the graphs below? Select ALL true statements.

Accepted Answer

g. Material A begins to permanently deform around 5 N of force.

Accepted Answer

c. All of the materials deform when force is applied.

Answer

a. Material A will most likely break with less force than Material C.

Answer

d. Material A and B could be the same IF material A is twice as thick as material B.

Answer

b. Material B and Material C deform at the same rate.

Question 18

If the phone is foldable and unbreakable, which graph would you claim represents how the phone responds to forces?

Accepted Answer

c. Line C

Answer

a. Line A

Answer

b. Line B

Question 19

What does a steeper slope on a force vs. deformation graph indicate?

Accepted Answer

The material is more flexible, meaning it can deform easily with little force applied

Answer

The material will break easily

Answer

The material is stronger and resists deformation more

Answer

The experiment was conducted incorrectly

Question 20

What is the relationship between force and deformation for most materials?

Accepted Answer

As force increases, deformation increases

Answer

There is no relationship between force and deformation

Answer

As force increases, deformation decreases

Answer

Force and deformation are always constant

Question 21

What is the difference between temporary and permanent deformation?

Accepted Answer

A) Temporary deformation returns to original shape, permanent does not

Answer

B) There is no difference between the two

Answer

C) Permanent deformation only occurs in metals

Answer

D) Temporary deformation is always visible, permanent is not

Question 22

What is a 'line of best fit' used for in data analysis?

Accepted Answer

To represent the overall trend in the data

Answer

To connect all data points exactly

Answer

To highlight the highest data point

Answer

To separate different data sets

Question 23

Why do the yellow dots have the fewest amount of dots?

Accepted Answer

That material most likely deformed temporarily when using a little amount of force

Answer

That material was NOT very strong and resisted only 20 N of force

Answer

That material was very strong and resisted over 10 N of force

Answer

That material most likely deformed permanently when using a little amount of force

Question 24

If two objects travel the same distance but one takes twice as long, they have the same speed.

Accepted Answer

False

Answer

True

Question 25

Edison High's Winter 4x4 Relay Team just broke the school record, by completing the race in 3 minutes and 23 seconds!! The goal of the race is to have each teammate run 400 meters as fast as they can. Here are the split times for each teammate: Brock: 51.51 seconds, Bryce: 51.9 seconds, Joe: 50.63 seconds, Moustafa: 49.82 seconds. What was Brock's speed?

Accepted Answer

7.77 m/s

Answer

1.97 m/s

Answer

7.8 cm/s

Answer

51.51 m/s

Answer

0.13 m/s

Question 26

Edison High's Winter 4x4 Relay Team just broke the school record, by completing the race in 3 minutes and 23 seconds! The goal of the race is to have each teammate run 400 meters as fast as they can. Here are the split times for each teammate: - Brock: 51.51 seconds - Bryce: 51.9 seconds - Joe: 50.63 seconds - Moustafa: 49.82 seconds Who was the fastest?

Accepted Answer

Moustafa

Answer

Brock

Answer

Bryce

Answer

Joe

Question 27

Who won the bike race?

Accepted Answer

Kim

Answer

Barry

Answer

Sasha

Question 28

Who had a constant speed?

Accepted Answer

Kim

Answer

Barry

Answer

Sasha

Question 29

What was Barry's average speed?

Accepted Answer

0.17 km/min

Answer

0.33 km/min

Answer

0.4 km/min

Answer

0.077 km/min

Question 30

How does increasing either the speed or the mass of a moving object affect its kinetic energy?

Accepted Answer

The kinetic energy increases.

Answer

There is no relationship between mass / speed AND kinetic energy.

Answer

The kinetic energy stays the same; unaffected.

Answer

The kinetic energy decreases.

Question 31

How does increasing either the speed or the mass of a moving object affect the peak forces in a collision between that moving object and a stationary object?

Accepted Answer

The peak forces increase.

Answer

The peak forces decrease.

Answer

The peak forces stay the same; unaffected.

Answer

There is no relationship between speed / mass and the peak forces.

Question 32

How would increasing either the speed or the mass of a moving object affect the amount of damage done in a collision?

Accepted Answer

The amount of damage would increase.

Answer

The amount of damage would decrease.

Answer

The amount of damage would not be affected by these variables.

Question 33

About how many times further did the box get pushed when the mass was doubled?

Accepted Answer

Twice as far

Answer

Half as far

Answer

not really sure

Answer

4 times as far

Question 34

About how many times further did the box get pushed when the speed was doubled?

Accepted Answer

4 times as far

Answer

Twice as far

Answer

1/2 as a far

Answer

not really sure

Question 35

What does this tell us then about how much more kinetic energy the cart had when the mass was doubled and when the speed was doubled?

Accepted Answer

It had double the kinetic energy when we doubled its mass, but it had four times as much kinetic energy when we doubled its speed.

Answer

not really sure...

Answer

It had half the kinetic energy when we doubled its mass, but it had four times as much kinetic energy when we doubled its speed.

Answer

It had double the kinetic energy when we doubled its mass, but it had double as much kinetic energy when we doubled its speed.

Question 36

Based on your answers above as well as your collected data, which graph pattern do you anticipate seeing for your MASS and KE graph?

Accepted Answer

A) Directly Proportional

Answer

B) Inversely Proportional

Answer

C) Proportional to Square

Question 37

Based on your answers above as well as your collected data, which graph pattern do you anticipate seeing for your SPEED and KE graph?

Accepted Answer

Proportional to Square

Answer

Directly Proportional

Answer

Inversely Proportional

Question 38

Which variable has the greatest impact on kinetic energy and damage?

Accepted Answer

Speed

Answer

Mass

Question 39

How much would the kinetic energy of an object decrease if you reduced its mass in half but not its speed?

Accepted Answer

It would decrease by 1/2

Answer

It would decrease by 1/4

Answer

It would decrease by 1

Answer

It would double (x2)

Question 40

How much would the kinetic energy of an object decrease if you reduced its speed in half but not its mass?

Accepted Answer

It would decrease by 1/4

Answer

It would double (x2)

Answer

It would decrease by 1/2

Answer

It would decrease by 1

Question 41

Potential Energy can transfer into Kinetic Energy.

Accepted Answer

True

Answer

False

Question 42

Which describe this graph?

Accepted Answer

Scatter Plot

Accepted Answer

Shows the relationship between wind speed and KE loss

Answer

shows a change in KE over time

Answer

Bar Graph

Question 43

According to the graph, what happens to kinetic energy loss as a biker's speed increases against a headwind?

Accepted Answer

It increases

Answer

It stays the same

Answer

It fluctuates randomly

Answer

It decreases

Question 44

Which describe this graph?

Accepted Answer

Bar Graph

Accepted Answer

compares the fuel efficiency of different vehicles

Answer

Scatter Plot

Answer

Shows the relationship between wind speed and KE loss

Answer

shows a change in KE over time

Question 45

Based on the bar graph, which type of vehicle is least affected by air resistance in terms of fuel efficiency?

Accepted Answer

Motorcycle

Answer

Car

Answer

Refuse Truck

Answer

School Bus

Question 46

What are some factors that contribute to the lower miles per gallon in larger vehicles?

Accepted Answer

More frequent energy transfer to the surrounding environment

Accepted Answer

Increased surface friction

Accepted Answer

Greater air resistance

Answer

Smaller mass & lower kinetic energy

Question 47

If you rub your hands together quickly, why do they feel warm?

Accepted Answer

The friction between your hands increases the kinetic energy of skin particles.

Answer

Your hands absorb heat from the air.

Answer

The roughness of your skin decreases.

Answer

The movement removes heat from your hands.

Question 48

What is friction?

Accepted Answer

A force that opposes motion

Answer

A force that supports motion

Answer

An energy that converts to kinetic energy

Answer

An energy that affects temperature

Question 49

Which of the following best describes how friction is created?

Accepted Answer

Friction occurs because surfaces have microscopic bumps that interact and push against each other.

Answer

Friction is caused by gravity pulling objects downward.

Answer

Friction occurs only when an object is moving uphill.

Answer

Friction happens because air molecules stick to surfaces.

Question 50

Which of the following effects occur when energy is transferred due to friction or air resistance? (Select all that apply.)

Accepted Answer

The air or surface in contact with the object experiences an increase in temperature.

Accepted Answer

Air particles or surface particles gain kinetic energy.

Accepted Answer

The moving object slows down.

Answer

The object speeds up as more energy is lost.

Question 51

What happens to a baseball's kinetic energy as it moves through the air?

Accepted Answer

The kinetic energy of a baseball decreases as it moves through the air.

Answer

The kinetic energy of a baseball increases as it moves through the air.

Answer

The kinetic energy of a baseball remains constant as it moves through the air.

Answer

The kinetic energy of a baseball fluctuates randomly as it moves through the air.

Question 52

Which factor has the greatest impact on the final speed of the baseball after being hit?

Accepted Answer

Bat speed

Answer

Weather conditions

Answer

Bat mass

Answer

Ball weight

Question 53

When a hand hits a volleyball, some energy is lost as heat (thermal energy).

Accepted Answer

True

Answer

False

Question 54

What is the net force and direction? Select TWO answers.

Accepted Answer

0 N

Accepted Answer

balanced, no movement

Answer

18 N

Answer

left

Answer

right

Question 55

What is the net force and direction? Select TWO answers.

Accepted Answer

12 N

Accepted Answer

right

Answer

18 N

Answer

left

Answer

balanced, no movement

Question 56

What is the net force and direction? Select TWO answers.

Accepted Answer

4 N

Accepted Answer

up

Answer

20 N

Answer

down

Answer

balanced, no movement

Question 57

Look at the free body diagram! Which force is missing from the action-reaction pair between the piano and the ground?

Accepted Answer

normal force

Answer

applied force

Answer

frictional force

Answer

tension force

Question 58

Whenever a car is moving on the road, there is always this force opposing the motion:

Accepted Answer

friction

Answer

inertia

Answer

momentum

Answer

applied force

Question 59

How is the object typically represented in a free-body diagram?

Accepted Answer

As a box

Answer

As a circle

Answer

As a triangle

Answer

As a star

Question 60

What should each force arrow in a free-body diagram be labeled with?

Accepted Answer

The type of force

Answer

The object's color

Answer

The object's temperature

Answer

The object's speed

Question 61

What does the direction of the arrow in a free-body diagram indicate?

Accepted Answer

The direction the force is acting

Answer

The color of the object

Answer

The speed of the object

Answer

The temperature of the object

Question 62

In a free-body diagram, what does the size of the arrow represent?

Accepted Answer

The magnitude of the force

Answer

The color of the force

Answer

The temperature of the object

Answer

The speed of the object

Question 63

What is a free-body diagram used for?

Accepted Answer

To show the relative magnitude and direction of all forces acting upon an object

Answer

To measure the temperature of an object

Answer

To calculate the speed of an object

Answer

To determine the color of an object

Test Review - 8.1 Lessons 1-9

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