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Semester 2 - Final Exam Review

Total questions: 64

Worksheet time: 27mins

Name
Class
Date
1.

The ability to do work (move) is called...

a)

Matter

b)

Energy

c)

Weight

d)

Force

2.

The SI Unit for Energy is

a)

Joule

b)

Potential

c)

Calorie

d)

Kilojoule

3.

Which of the following is NOT a form of energy?

a)

Thermal

b)

Mechanical

c)

Sound

d)

Water

4.

True or false: Energy cannot change from one type to another.

a)

True

b)

False

5.

Energy that is stored is called...

a)

Kinetic Energy

b)

Potential Energy

c)

Mechanical Energy

d)

Thermal Energy

6.

What is kinetic energy?

a)

moving energy

b)

potential energy

c)

stored energy

d)

renewable energy

7.
At what position does the pendulum have the greatest gravitational potential energy?
a)
Position D
b)
Position C
c)
Position B
8.
At what position does the pendulum have the greatest kinetic energy?
a)
Position D
b)
Position C
c)
Position B
9.

GRAVITATIONAL POTENTIAL ENERGY DEPENDS ON

a)

MASS AND VELOCITY

b)

MASS AND WEIGHT

c)

MASS AND HEIGHT

d)

HEIGHT AND DISTANCE

10.
Which character has the greatest gravitational potential energy?
a)
Character A
b)
Character B
c)
Character C
d)
Character D
11.
Which skier has the greatest kinetic energy?
a)
Skier A
b)
Skier B
c)
Skier C
d)
Skier D
12.
A girl on a motorbike passes by at a speed of 15 m/s. Her mass is 40 kg. What is her kinetic energy? 
a)
300 Joules
b)
600 Joules
c)
950 Joules
d)
4500 Joules
13.

Calculate the potential energy of a roller coaster at the top of a 72 m hill that has a mass of 115 kg.

Use g=9.8 ms2g=9.8\ \frac{m}{s^2}  

Don't forget to put your units

(a)  

14.

Calculate the kinetic energy of a 2 kg rock that rolls down the hill with a velocity of 8 m/s.

Don't forget to put your units

(a)  

15.

A cinder block is sitting on a platform 20.0 m high. It has a mass of 8.0 kg. Calculate the potential energy of the cinder block.

Use g=9.8 ms2g=9.8\ \frac{m}{s^2}  

Don't forget to put your units

(a)  

16.
One form of energy changes to another
a)
Energy Transformation
b)
Energy Transfer
17.
What is the formula for work?
a)
Force = work x distance
b)
Distance = force x work
c)
Work = force x distance
d)
Work = force x mass
18.

This car needs 8600J of energy to power it. If 5000J is changed into useful energy, how much energy is wasted?

Don't forget to put your units

(a)  

19.

Total energy = 200J

Useful energy = 20J

Workout the efficiency of this lightbulb.

efficiency = useful enegytotal energy in ×100efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100  

(a)  

20.

A car transfers 100 J of chemical energy in order to gain 45 J of kinetic energy. The efficiency of the car is

(a)  

21.

True or False: Opposites charges attract.

a)

True

b)

False

22.

What do we call the flow of electricity around a circuit?

a)

electric current

b)

insulator

c)

conductor

d)

electric circuit

23.

An object that is neutral contains the same number of electrons and protons.

a)

True

b)

False

24.

In order for electricity to flow, the circuit needs to be ________________.

a)

open

b)

closed

c)

simple

d)

parallel

25.

A material that allows heat or electricity to flow through it is a ______________?

a)

insulator

b)

circuit

c)

current

d)

conductor

26.

Material that does not allow heat or electricity to flow through is a _____________________.

a)

conductor

b)

insulator

c)

wire

d)

current

27.

Glass does not allow electricity to flow through it, so glass is a (n) ________________.

a)

conductor

b)

insulator

28.
An example of a voltage source is a _____.
a)
voltmeter
b)
battery
c)
resistance
d)
switch
29.

Copper allows electricity to flow through it, therefore it is a ______________________.

a)

conductor

b)

insulator

30.

In order for electricity to flow you need a _________?

a)

wire

b)

battery

c)

closed circuit

d)

light bulb

31.
A particle that carries a negative electric charge is called a(n) ______.
a)
neutron
b)
atom
c)
proton
d)
electron
32.
A neutral object becomes negatively charged when it loses electrons.
a)
true
b)
false
33.
Electrical resistance is low in a good conductor.
a)
true
b)
false
34.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
35.
Which of the following is caused by static electricity?
a)
a stove getting hot when it is turned on
b)
a magnet being attracted to a refrigerator
c)
a lightning strike during a storm
d)
a light bulb coming on when a switch is turned on
36.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
37.
A region around a charged particle that can exert a force on another charged particle is called an
a)
electric pulse.
b)
electric charge.
c)
electric force.
d)
electric field.
38.
Electric field lines are drawn
a)
In a radial direction, from negative to positive.
b)
In a radial direction, from positive to negative.
c)
In a tangent direction, from positive to negative.
d)
In a tangent direction, from negative to positive.
39.

The "q" in Coulomb's Law stands for

a)
the mass of charges objects.
b)
the distance of charged objects.
c)
the force of charged objects.
d)
the charge of charged objects.
40.

The electrostatic force between two bodies having charges 5.0 x 102 μC and 1.0 x 102 μC separated by distance of 0.50 m in air is

Use k=9⋅109 N⋅m2C2k=9\cdot10^9\ \frac{N\cdot m^2}{C^2}  

a)
1800 N
b)
1.0 x 103 N
c)
2200 N
d)
3.0 x 102 N
41.

Use k=9⋅109 N⋅m2C2k=9\cdot10^9\ \frac{N\cdot m^2}{C^2}  

A positive charge of 4.0 µC exerts an attractive force of 8.0 N on an unknown charge 20.0 cm away. The unknown charge is

a)
+ 8.9 µC 
b)
- 8.9 µC
c)
+ 4  µC
d)
- 44  µC 
42.

Choose the object that can be attracted to magnets.

a)

nail

b)

book

c)

rubber

d)

matchstick

43.

Choose the object that can not be attracted to magnets.

a)

pillow

b)

scissors

c)

iron key

d)

metal spoon

44.

A magnet will pick up an object that is made of...

a)

plastic

b)

iron or steel

c)

glass

d)

copper

45.

What would happen if a north pole of a magnet came close to a north pole of another magnet?

a)

they would be attracted to each other

b)

they would be repelled from each other

46.

If you cut a bar magnet in half, it forms _____.

a)

2 poles

b)

4 poles

c)

8 poles

d)

6 poles

47.

The area around a magnet is called the .....

a)

attraction zone

b)

work area

c)

magnetic field

d)

hot zone

48.
A north pole and a south pole will attract.
a)
True
b)
False
49.
True or False: All metals stick to magnets.
a)
True
b)
False
50.
Why does a compass needle point north?
a)
The compass is a bar magnet
b)
Because north is up
c)
Because it's magic
d)
It lines up with the Earth's magnetic field
51.

Which one represents the magnetic field lines of magnets repelling?

a)

A

b)

B

52.

Which one represents the magnetic field lines of magnets attracting?

a)

A

b)

B

53.
As electrons move, they make
a)
A. electromagnetism.
b)
B. auroras.
c)
C. ferromagnetism.
d)
D. magnetic fields.
54.
A device that converts electrical energy into mechanical energy
a)
A. electromagnet
b)
B. electromagnetic induction
c)
C. electric motor
d)
D. electromagnetism
55.
A device that converts mechanical energy into electrical energy
a)
A. electric generator
b)
B. electric motor
c)
C. electromagnetic induction
d)

D. electric stove

56.
The process of creating a current in a circuit by changing a magnetic field
a)
A. electric generator
b)
B. electric motor
c)
C. electromagnetic induction
d)
D. magnet
57.
What is the flow of electricity?
a)
electric motor
b)
Electric current
c)
Electric eel
d)
electric circuit
58.
What can demagnetize a magnet?
a)
A. high altitudes
b)
B. high temperatures
c)
C. low altitudes 
d)
D. low temperatures
59.
What is created when a magnet moves through a coil of wire?
a)
A. an electromagnet
b)
B. a ferromagnet
c)
C. a solenoid
d)
D. an electric current
60.

An (a)   is a type of magnet in which the magnetic field is produced by an electric current

61.
If you wrap more coils around an electromagnet, it will become 
a)
brighter
b)
stronger
c)
weaker
d)
invisible
62.

What can electromagnets do that regular magnets can't?

a)

Switch their magnetic fields

b)

Explode

c)

Be turned off

d)

They are both the same in every way

63.
How could the experimenter increase the amount of electricity being induced by this experiment?
a)
Increase the number of coils
b)
Decrease the number of coils
c)
Flip the magnet around
d)
Nothing, the amount of electricity cannot be increased
64.

Can you produce current in a wire with a magnet that is sitting still?

a)

Yes; having a magnet near a wire is enough to excite the electrons

b)

No; the magnetic field has to be changing to excite the electrons

c)

No; magnets cannot create electricity

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