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FINAL FINAL PHY QUIZZ

Total questions: 60

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

Which of the following represents the rate of the flow of electricity, expressed in unit of amps?

a)

current

b)

circuit

c)

voltage

d)

resistance

2.

Which of the following represents the opposition presented to the current by a material or device, measured in ohms?

a)

current

b)

resistance

c)

voltage

d)

electricity

3.

Which of the following represents the potential difference between two points, measured in volts?

a)

voltage

b)

current

c)

electricity

d)

resistance

4.

In the model, what do the arrows represent?

a)

The flow of current

b)

The flow of resistance

c)

The flow of voltage

d)

The flow of positrons

5.

In the model, what does the lightbulb represent?

a)

electricity

b)

current

c)

voltage

d)

resistance

6.

In the model, what does the battery represent?

a)

voltage

b)

current

c)

circuit

d)

resistance

7.

What is the formula for voltage?

a)

V = (I x R) / 2

b)

V = I / R

c)

V = R / I

d)

V = I x R

8.

If a charger for a tablet offers a voltage of 120V and has 240Ω of resistance, what is the amperage?

a)

0.5A

b)

2A

c)

14,400A

d)

28,800A

9.

Without considering the LED light, how many more volts will you need to increase the current to 0.05A?

a)

11V

b)

8V

c)

24V

d)

18V

10.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
11.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
12.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
13.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
14.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
15.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
16.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
17.
Which of these substances conducts electricity the best?
a)
wood
b)
brick
c)
copper
d)
plastic
18.
Which of these substances conducts electricity the best?
a)
wood
b)
brick
c)
copper
d)
plastic
19.

Select Multiple Answers.


A negative force between two charges mean they:

a)

Attract

b)

Repel

c)

Are the same sign

d)

Are opposite signs

20.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
21.

Coulomb's law says that the force between any two charges depends

a)

directly on the size of the charges

b)

inversely on the square of the distance between the charges

c)

both are correct

22.
What variable do "Newtons" represent?
a)
Electrostatic Charge
b)
Force
c)
Distance
d)
Mass
23.

Thermal energy being transferred from a hot mug of cocoa to the table it is sitting on is an example of __________.

a)

convection

b)

conduction

c)

radiation

d)

chemistry

24.

Which best explains how this roasting marshmallows happens?

a)

Heat from the fire is conducted to the marshmallow.

b)

Heat from the fire is radiated to the marshmallow.

c)

The coolness of the marshmallow is conducted to the fire.

d)

The coolness of the marshmallow is radiated to the fire.

25.

Which of the following best describes CONVECTION?

a)

When heat is transferred through waves.

b)

When heat is transferred through objects that are touching.

c)

The movement of gas or liquid in which warmer parts move up and the colder parts moves down.

26.

Warm air rises and the cool air sinks demonstrates this type of heat transfer.

a)

Conduction

b)

Convection

c)

Radiation

27.

Walking on hot sand with your bare feet shows this type of heat transfer.

a)

conduction

b)

convection

c)

radiation

28.

Ironing a shirt is an example of:

a)

condensation

b)

evaporation

c)

conduction

d)

convection

29.

You and your friends are gathered around a campfire to keep warm. How is heat being transferred to you?

a)

conduction

b)

convection

c)

radiation

30.

This is the transfer of thermal energy through "space".

a)

conduction

b)

radiation

c)

convection

d)

spaceship

31.

What kind of heat transfer is occurring when the sun warms the sand?

a)

Conduction

b)

Convection

c)

Radiation

d)

All of them

32.
Heat transfer in boiling water.
a)
Conduction
b)
Convection
c)
Radiation
33.
Which material is the best conductor of heat?
a)
glass
b)
styrofoam
c)
metal
d)
wood
34.

The SI unit of pressure is the (a)  

35.

1 pascal is equivalent to a force of ...................

a)

1 Nm-2

b)

1 Nm

c)

1 Nm2

d)

1 Nm-1

36.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
37.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
38.
True or false:
Pressure depends on depth
a)
true
b)
false
39.
What happens to the amount of oxygen molecules as altitude increases?
a)
fewer molecules
b)
more molecules
c)
same amount of molecules
d)
nothing happens to the molecules
40.
Air pressure is greatest when near Earth's surface because?
a)
The air molecules are farther apart.
b)
The air molecules are closer together.
c)
Air molecules collide.
d)
Air molecules are tightly packed.
41.
Air pressure is greater _______.
a)
at the top of the mountain
b)
at the bottom of the mountain
c)
at the center of the mountain
42.
Density of air is greater ________.
a)
at the top of the mountain
b)
at the bottom of the mountain
c)
at the center of the mountain
43.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
44.

What pressure will a force of 4000N exert on an area of the ground if each foot is 40cm2?

a)

40 N/cm2

b)

100 N/cm2

c)

400 N/cm2

d)

10 N/cm2

45.
The pressure resulting from a force of 50 N exerted over an area of 5 m2 is
a)
10 N
b)
0.1 N
c)
10 N/m2
d)
0.1 Pa
46.

What pressure will be exerted by a force of 10 N acting on an area of 4m2 ?

a)

1 Pa

b)

2 Pa

c)

5 Pa

d)

2.5 Pa

e)

20 Pa

47.

What force will be produced by a pressure of 100 N/m2 on an area of 4 m2

a)

400 N

b)

100 N

c)

25 N

d)

104 N

48.

What force will be produced by a pressure of 2 000 N/m2 on an area of 5 m2

a)

4000 N

b)

1000 N

c)

250 N

d)

10 000 N

49.

What is the area of a surface that feels a force of 1000 N when a pressure of 250 N/m2 is applied to it>

a)

4 m2

b)

0.25 m2

c)

4000 m2

d)

1250 m2

50.

What is the area of a surface that feels a force of 750 N when a pressure of 250 N/m2 is applied to it ?

a)

3 m2

b)

0.33 m2

c)

187 500 m2

d)

1000 m2

51.

A force of 100N is exerted over an area of 1m2 , calculate the pressure exerted.

a)

100 N/m2

b)

1000 N/m2

c)

10000 N/m2

d)

10 N/m2

52.

A load has a mass = 90kg and is exerted over and area of 12mm2 , calculate the pressure exerted.

a)

73.58 kN/m2

b)

735.8 kN/m2

c)

7.358 kN/m2

d)

882.9 kN/m2

53.

What is the relationship between pressure and force?

a)

Pressure is directly proportional to force.

b)

Pressure is inversely proportional to force.

c)

Pressure is independent of force.

d)

Pressure is equal to force.

54.

Convert 5000 Pa to kPa.

a)

0.5 kPa

b)

5 kPa

c)

50 kPa

d)

500 kPa

55.

A force of 200 N is applied to a surface area of 0.5 m². Calculate the pressure.

a)

100 Pa

b)

200 Pa

c)

400 Pa

d)

800 Pa

56.

Convert 0.75 kPa to Pa.

a)

75 Pa

b)

750 Pa

c)

7500 Pa

d)

75000 Pa

57.

which hole has the longest distance?

a)

highest one

b)

the middle one

c)

the deepest one

d)

all of them have the same distance

58.

A diver is at 100 m depth in a sea. If density of the sea water is 1025 kg m-3 , calculate the water pressure acting on the diver?

a)

1005.5 kPa

b)

1000.0 kPa

c)

1025.0 kPa

d)

1020.0 kPa

59.

A diver is at 90 m depth in a sea. If density of the sea water is 1025 kg m-3 , calculate the actual pressure acting on the diver?

[atmospheric pressure = 100kPa]

a)

905 kPa

b)

1005 kPa

c)

1019 kPa

d)

1025 kPa

60.

Calculate the pressure exerted by the water on the fish.

[Density of water = 1 000 kg m−3 and g = 10N/kg]

a)

5 × 104 Pa

b)

5 × 107 Pa

c)

5 × 106 Pa

d)

5 × 10-1 Pa

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