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HPS Unit 7 & 8 Review

Total questions: 106

Worksheet time: 4hrs 24mins

Name
Class
Date
1.

_____is the joining of atomic nuclei

a)

Fusion

b)

chain reaction

c)

Photosynthesis

d)

Fission

2.

_______is the splitting of atomic nuclei

a)

Fission

b)

nuclear reaction

c)

Fusion

d)

bayler reaction

3.

Which process occurs naturally in the centre of stars like the Sun

a)

Bi-multiple reaction

b)

Fission

c)

chemical

d)

fusion

4.

How is the alpha particle written in a nuclear equation?

a)

42He

b)

24He

c)

0-1e

d)

00γ

5.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
6.
Solve this equation for alpha decay.
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
7.

Gamma rays have

a)

no mass

b)

a huge mass

c)

a small mass

d)

an average mass

8.
Solve this equation for beta decay.
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
9.
Has the symbol
a)
Alpha
b)
Beta 
c)
Gamma
10.
Has the highest penetrating power.  Can penetrate our body.  Even several cm thick of lead or several meters thick of concrete cannot stop all of it.
a)
Alpha
b)
Beta
c)
Gamma
11.

Has the lowest penetrating power.  Can only penetrate 0.05 mm into the body and can be stopped by the skin.

a)
Alpha
b)
Beta
c)
Gamma
d)

Electron capture

12.
Uranium-238  decays into  Thorium-234  by emitting .........
a)
an alpha particle
b)
a beta particle
c)
gamma rays
d)
visible light
13.
Radioactive materials have unstable...
a)
electrons
b)
protons
c)
nuclei
d)
neutrons
14.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons 
d)
mass number
15.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
16.

The % of the parent isotope remaining after 2 Half Lives.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

17.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
18.

Which type of nuclear radiation is this?

a)

alpha emission

b)

beta emission

c)

gamma emission

d)

electron capture

19.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
20.

A radioactive nuclide has a ____ stable nucleus than a non-radioactive nucleus of the same element.

a)

more

b)

less

c)

identical

d)

small

21.
This is an example of...
a)
Fission  reaction
b)
Fusion reaction
c)
Decomposition reaction
d)
Decay
22.

What occurs in both fusion and fission reactions?

a)

Small amounts of energy are converted into large amounts of matter.

b)

Small amounts of matter are converted into large amounts of energy.

c)

Heavy nuclei are split into lighter nuclei.

d)

Light nuclei are combined into heavier nuclei.

23.

Which reaction represents fusion?

a)
b)
c)
d)
24.

Which reaction represents fission?

a)
b)
c)
d)
25.

Identify the type of nuclear decay shown here

21483Bi → 0-1e + 21484Po

a)

alpha

b)

beta

c)

gamma

26.

Solve this equation.

85209At = ___ + 24He

a)

83205Bi

b)

86209Rn

c)

81207Tl

d)

85208At

27.

What type of nuclear decay is shown here

13756Ba →→ 13756Ba + γ rays

a)

alpha

b)

beta

c)

gamma

28.

What type of decay is shown here

23892U ---> 23490Th + 42He.

a)

alpha

b)

beta

c)

gamma

29.

Solve this equation for.

614C = ___ + -10e

a)

410Be

b)

714N

c)

210He

d)

613C

30.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
31.

What is the Half life of this isotope?

a)

5 seconds

b)

10 seconds

c)

15 seconds

d)

20 seconds

32.

What is the Half Life of this isotope?

a)

3 days

b)

5 days

c)

8 days

d)

10 days

33.
If one-fourth of the carbon-14 is remaining then how many half-lives have passed?
a)
1
b)
2
c)
3
d)
4
34.

After 22,800 years, approximately what percentage of the original carbon-14 remains?

a)

15%

b)

12.5%

c)

6.25%

d)

3.125%

35.
If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.
a)
1.25mg
b)
1.25g
c)
10g
d)
10mg
36.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
37.

After 24.0 days, 2.00 milligrams of an original 128.0 milligram sample remain. What is the half-life of the sample?

(a)  

38.

100.0 grams of an isotope with a half-life of 36.0 hours is present at time zero. How much time will have elapsed when 6.25 grams remains?

(a)  

39.

How much time will be required for a sample of H-3 to lose 75% of its radioactivity? The half-life of tritium is 12.5 years.

(a)  

40.

Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his DISTANCE?

a)

10 mi

b)

7 mi

c)

8 mi

d)

6 mi

41.

Distance and direction of an object's change in position from a starting point (HINT: Direct path from starting point to end point)

a)

displacement

b)

distance

c)

motion

d)

reference point

42.

Jasmine runs exactly 3 laps around a 400 meter track. What is the DISPLACEMENT?

a)

800 m

b)

400 m

c)

0 m

d)

1200 m

43.

David walks 3 km north, and then turns east and walks 4 km. What is the DISTANCE?

a)

7 km

b)

3 km

c)

4 km

d)

1 km

44.

What does magnitude mean?

a)

amount or size

b)

vector

c)

frame of reference

d)

motion

45.

Displacement is a vector because it has magnitude and ______________:

a)

meters

b)

direction

c)

motion

d)

frame of reference

46.
A scalar is a magnitude _____.
a)
With direction.
b)
Without direction.
47.

How do scalars and vectors differ?

a)

scalers have units

b)

scalers have direction

c)

vectors have units

d)

vectors have direction

48.

If you walk across town, taking many turns, your displacement is the

a)

total distance that you traveled.

b)

distance and direction of a straight line from your starting point to your ending point.

c)

distance in a straight line from your starting point to your ending point.

d)

direction from your starting point to your ending point.

49.

You travel 30 km West of your home and then turn around and go East for 10 km. What is your displacement from your home.

a)

20 km

b)

20 km, West

c)

40 km

d)

40 km, West

50.

Vocabulary Check:

What is the difference between speed and velocity

a)

Speed is based on time and velocity is not

b)

Velocity has distance and speed does not

c)

Speed has direction

d)

Velocity has direction

51.

Juan ran 72 m across the football field in 8 seconds. What was his speed?

a)

8 m/s

b)

576 m/s

c)

7 m

d)

9 m/s

52.

Steve runs 20 m North in 4 seconds. What is his velocity

a)

5 m/s

b)

4 m/s south

c)

5 m/s south

d)

5 m/s north

53.

If a car is going 125 m/s for 13 seconds, how far does it go?

a)

9.61 meters

b)

1625 meters

c)

1562 seconds

d)

138 m/s

54.

A boat is going 87 m/s. How long will it take him to go 1 km? (Hint: convert km to meters)

a)

.087 seconds

b)

11.49 seconds

c)

.0087 seconds

d)

87,000 seconds

55.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Deacceleration
d)
Not moving
56.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
57.

How long does it take a car to travel 40m at 12m/s?

a)

4.8 s

b)

480 s

c)

3.33 s

d)

33.3 s

58.
Which graph shows: a car slowing down and coming to a stop.
a)
A
b)
B
c)
C
d)
D
59.

the unit of acceleration is

a)

(m/s2)

b)

jouls

c)

m

d)

s

60.

A negative acceleration means that your object is  

a)

constant

b)

speeding up

c)

at rest

d)

slowing down

61.

A positive acceleration means that your object is

a)

at rest

b)

speeding up

c)

moving

d)

slowing down

62.

When is an object under uniform acceleration?

a)

none of the following

b)

when the direction is straight

c)

when the velocity change is constant per unit time

d)

when the time is constant

63.

A bus starts from rest and accelerates to 14 m/s in 4 s. What is the average acceleration of the bus?

a)

3.5 m/s2

b)

5.9 m/s2

c)

10.5 m/s2

d)

24 m/s2

64.

What is the acceleration during the first 5 seconds?

a)

2 m/s2

b)

4 m/s2

c)

5 m/s2

d)

10 m/s2

65.

A change in speed and/or direction...

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

66.

Speed in a given direction...

a)

Speed

b)

Velocity

c)

Acceleration

d)

Nebula

67.

At what speed would a car have to move in order to travel 20 kilometers in 2 hours.

a)

5 km/hr

b)

10 km/hr

c)

20 km/hr

d)

40 km/hr

68.

A helicopter flies west 200 miles in 2 hours. What is its velocity?

a)

99 mph

b)

100 mph south

c)

400 mph south

d)

297 mph south

69.

Using the graph, which person finished the race first?

a)

Biker

b)

Runner

c)

Walker

d)

All of these finished at the same time.

70.

Using which point shows the object at speeding UP?

a)

from A to B

b)

from C to D

c)

from D to E

d)

from E to F

71.

As the ball falls towards the ground, its velocity

a)

zero

b)

decreases

c)

at rest

d)

increases

72.

Which of the following objects is accelerating?

a)

A car driving in a northwest at a constant speed of 35 mph.

b)

A car driving southwest at a constant speed of 35 mph.

c)

A car driving in a circle at a constant speed of 35 mph.

Back

d)

A car driving south at a constant speed of 45 mph.

73.

What is Newton's 1st Law?

a)

For every action there is an equal and opposite reaction.

b)

An object at rest will stay at rest, an object in motion will stay in motion, unless an unbalanced force acts upon it.

74.

Which of the following is an example of balancing forces?

a)

A Book resting on the table.

b)

A pencil is knocked off the desk.

75.

What is Newton's 2nd Law?

a)

For every action there is an equal and opposite reaction.

b)

Acceleration depends on two variables, the mass of the object and the amount of force.

76.

What explains why objects resist changes in their state of motion?

a)

gravity

b)

inertia

c)

force

d)

friction

77.

Newton's first law states that an object must travel at a constant speed and in ___________, unless an unbalanced force acts on it.

a)

in a circle

b)

a wave like manner

c)

the same direction

78.

Looking at the image. Decide if this is balanced or unbalanced.

a)

Unbalanced

b)

Balanced

79.

Looking at the image. Decide if this is balanced or unbalanced.

a)

Unbalanced

b)

Balanced

80.

The force that prevents a ball rolling on the ground from continuing on it's path forever is...

a)

Friction

b)

Gravity

c)

Inertia

81.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
82.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
83.

A ______ is a push or pull on an object.

a)

force

b)

speed

c)

acceleration

d)

velocity

84.
F=MA
If you are pushing a 1000 kg car at 0.5 m/s2, how many newtons would that be? 
a)
2000 N
b)
60N
c)
500 N
d)
12 N
85.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Force
d)
Don't know
86.
F=MA 
Going down a hill a 12 kg sled has a force of 36 N. What is it's acceleration? 
a)
2 m/s2
b)
3 m/s2
c)
432 m/s2
d)
0.33 m/s2
87.
F=Ma
An object of mass 300 kg is observed to accelerate at the rate of 4 m/s2.  Calculate the force required to produce this acceleration. 
a)
75 N
b)
.013 N
c)
1200 N
d)
2 N
88.
F=Ma
A force of 200 N is exerted on an object of mass 40 kg that is located on a sheet of perfectly smooth ice.Calculate the acceleration of the object. 
a)
5 m/s2
b)
8000 m/s2
c)
0.2 m/s2
d)
1.32 m/s2
89.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
90.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
91.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
92.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
93.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
94.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
95.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
96.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
97.
What is the unit for momentum?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
98.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
99.
A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision.  What is the velocity of the second ball after the collision? 
a)
5 m/s
b)
2.5 m/s
c)
10 m/s
d)
7.5 m/s
100.
A 9300 kg railroad car traveling at a velocity of 5 m/s strikes a second boxcar that weighs 5000 kg at rest. At what speed will the second boxcar move?
a)
18.6 m/s
b)
9.3 m/s
c)
7.5 m/s
d)
1.86 m/s
101.
Which object listed below has the greatest momentum?
a)
A 0.05 kg object rolling at 0.2 m/s.
b)
A 0.15 kg object rolling at 2 m/s.
c)
A 0.15 kg object rolling at 1 m/s
d)
A 0.4 kg object rolling at 2 m/s.
102.
Determine the momentum of 1000-kg car moving northward at 20 m/s......... 
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s
d)
20000 kg * m/s north
103.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
104.
Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be:
a)

2 m/s 

b)

3.4 m/s 

c)

4.6 m/s 

d)

7.1 m/s

105.
A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?
a)
25 m/s
b)
375 m/s
c)
25 kg m/s
d)
375 kg m/s
106.
In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.
a)
0.5 m/s
b)
1.0 m/s
c)
0.33 m/s
d)
0.67 m/s

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