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PHYSICS

Total questions: 97

Worksheet time: 3hrs 34mins

Name
Class
Date
1.

Light travels...

a)

around corners

b)

in a straight line

c)

in waves

d)

in circles

2.

Light bounces off when it is

a)

reflected

b)

absorbed

c)

refracted

d)

transmitted

3.
Light bends when it is 
a)
refracted
b)
reflected
c)
absorbed
4.

What do smooth, shiny surfaces do?

a)

reflect light

b)

refract light

c)

absorb light

5.

When we see a rainbow, we see

a)

light being reflected

b)

light being refracted

c)

light being absorbed

6.
White light is made up of _________________ colors.
a)
10
b)
3
c)
7
d)
70
7.
Light that bends has been ____________________
a)
teleported
b)
reflected
c)
charged
d)
refracted
8.

This is an example of?

a)

Absorb

b)

Reflection

c)

Refraction

d)

Transmition

9.
When light can easily pass through an object, we say that that object is ___ .
a)
transparent
b)
translucent
c)
opaque
d)
transported
10.
When light partially passed through an object, we say that that object is ____ .
a)
translucent
b)
transparent
c)
opaque
d)
optical
11.
When light cannot pass through an object, we say that that object is ____ .
a)
opaque
b)
transparent
c)
translucent
d)
translated
12.
Light travels at ___________________ km per second.
a)
30
b)
300,000
c)
15
d)
1,000,00
13.
Light is a form of ______________________
a)
energy
b)
inertia
c)
currency
d)
sound
14.
All of the following are sources of light except ______________
a)
the sun
b)
a light bulb
c)
fire
d)
the moon
15.
Light that bounces back has been _______________
a)
transferred
b)
heated up
c)
absorbed
d)
reflected
16.
Which of the following items would most likely reflect light?
a)
tree
b)
mirror
c)
horse
d)
brick wall
17.
Light can travel through empty space.
a)
True
b)
False
18.
Which of these items does NOT refract light?
a)
eyeglasses
b)
camera
c)
cheese
d)
telescope
19.
Light travels in ___________________
a)
waves
b)
sound
c)
packs
d)
thunder
20.

What is the energy transformation that occurs in an electric pencil sharpener?

a)

mechanical energy to electrical energy

b)

electrical energy to mechanical energy

c)

radiant energy to sound energy

d)

chemical energy to mechanical energy

21.

Which object shows an energy transformation from electrical to mechanical?

a)
b)
c)
d)
22.

When a car burns gasoline it creates hot air to move the pistons in the engine, which causes the car to move. What energy transformation occur from the fuel to the movement of a car?

a)

thermal energy to mechanical energy

b)

thermal energy to chemical energy to mechanical energy

c)

chemical energy to thermal energy to mechanical energy

d)

chemical energy to electrical energy

23.
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
a)
Chemical to light
b)
Electrical to chemical
c)
Electrical to light
d)
Chemical to electrical
24.

The roller coaster cart has the most kinetic energy at position-

a)

W

b)

X

c)

Y

d)

Z

25.
A hairdryer converts -- 
a)
electrical energy into chemical
b)
electrical energy into thermal
c)
chemical energy into mechanical
d)
thermal energy into mechanical
26.
Which items would have this energy transformation: electrical energy -> thermal energy and light energy?
a)
toaster
b)
candle burning
c)
windmill turning
d)
Iron for your clothes
27.

Which items would have this energy transformation: mechanical energy -> sound energy?

a)

turning on a flashlight

b)

nuclear power plant

c)

wind turbine turning

d)

playing a violin

28.
Electrical Energy is transferred to _____ Energy.
a)
Thermal
b)
Solar
c)
Electrical
d)
None
29.

What type of energy transformation happens in hydro-electric power?

a)

kinetic to potential

b)

sound to mechanical

c)

chemical to electrical

d)

mechanical to electrical

30.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
31.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
32.
A swing has potential energy if _____________.
a)
it is in motion
b)
it is swinging backward
c)
it is sitting still
d)
it is spinning
33.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
34.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
35.
Wind turbines and windmills convert what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
36.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
15 J
b)
45 J
c)
0 J
d)
5 J
37.
What is the difference between calculating power and work?
a)
Power takes into account the time it takes to complete a task
b)
Work takes into account the time it takes to complete a task
c)
Power is force/area
d)
Work is force/area
38.

The roller coaster car has a mass of 500 kg. It is pulled from position 1 to 2 (30 m) by a motor. At the top of the ride the vertical distance top to bottom is 20 m. The motor pulls the car with a 4000 N force. Calculate the work done getting the car to the top of the ride.

a)

100 000J

b)

120 000J

c)

800 000J

d)

90 000J

39.

Bob (80 kg) uses 180 N of force to get him up the slope. The vertical distance is 2 m and the diagonal is 10 m. Calculate the work he does.

a)

1600 J

b)

160 J

c)

3600 J

d)

1800 J

40.

An 80 N rope tension force is used to slowly pull a wagon 50 m up a hill. Calculate the work done by the rope if it pulls parallel to the hill

a)

-4000 J

b)

4000 J

41.
Which situation is work not done?
a)
lifting a 20 pound box off the floor
b)
holding a 20 pound box above the floor
c)
sliding a 20 pound box across the floor
d)
sliding a 20 pound box up an inclined plane
42.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
43.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
44.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
45.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
46.
Energy that is stored in bonds between atoms is:
a)
Mechanical energy
b)
Chemical energy
c)
Kinetic energy
d)
Nuclear energy
47.

What type of energy transformation takes place when you plug in a lamp and turn it on?

a)

electrical to radiant

b)

electrical to mechanical

c)

chemical to radiant

d)

mechanical to thermal

48.

The SI Unit for Energy is

a)

Joule

b)

Newton

c)

Calorie

d)

Watt

49.

What percent energy is wasted by a machine if the energy input is 262 J and the energy output is 131 J?

a)

5%

b)

50%

c)

100 J

50.

What is the work output of a machine that has a work input of 2,800 Joules and an efficiency of 90%?

a)

25200 J

b)

2520 J

c)

0.0082J

51.

Which does not illustrate kinetic energy?

a)

It is expressed in Joule.

b)

It depends upon the objects’ mass and speed.

c)

It is the energy an object possesses due to its motion.

d)

It depends upon the objects’ mass and objects’ height.

52.

A roller coaster whose average speed is 32 m/s is at the top of a 72m hill and weighs 966N. At the top of the hill the coaster car has ___________________ energy.

a)

only kinetic energy

b)

only potential energy

c)

mostly kinetic energy

d)

both kinetic and potential energy

53.

What is the potential energy of a 3kg ball that is on the ground?

a)

0 J

b)

3 J

c)

9.8 J

d)

29.4 J

54.

Which statement does not illustrate power?

a)

A farmer plowing the rice field all day.

b)

A Siberian husky pulling a sled all day.

c)

A principal sitting on a chair while observing several classes all day.

d)

A teacher encoding his power point presentation in his laptop all day.

55.

Who has the most power?

a)

Ms Criza who encodes her observation tools using 12000J of work in 20 minutes.

b)

Sir Pau who studies his 5 lessons for the next classes in 15 minutes.

c)

Mrs Punzalan who used 50N force to inoculate mushrooms at a speed of 2m/s.

d)

Mrs Masalunga who watches her learners while taking their quiz in 30 minutes.

56.

A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?

a)

50J

b)

50W

c)

500J

d)

500W

57.

Which statement illustrates work done?

a)

A weightlifter holds a barbell above her head.

b)

A teacher applies a force to a wall and becomes exhausted.

c)

A rolling marble hits a note card and moves it across a table.

d)

A waiter carries a tray full of meals across a dining room at a constant speed.

58.

A weightlifter holds a 100 kg barbell above her head. Is work done?

a)

Yes because there is a force applied to the barbell and the force causes a displacement of the barbell.

b)

Yes because there is an upward force applied to the barbell and the barbell moves vertically.

c)

No because no displacement occurred.

d)

No because there is no force applied.

59.

What is the energy possessed by the cart?

a)

potential energy

b)

kinetic energy

c)

mostly potential

d)

mostly kinetic

60.

How will you describe the energy at Point A?

a)

mostly potential energy

b)

mostly kinetic energy

c)

losing PE, gaining KE

d)

losing KE, gaining PE

61.

What is the total mechanical energy of the object?

a)

100J

b)

75J

c)

50J

d)

25J

62.

The size of an object and its image are the same in this type of mirror...

a)

Plane

b)

Convex

c)

Concave

63.

According to the law of reflection the angle of incidence is ____________ the angle of reflection.

a)

less than

b)

greater than

c)

equal to

64.
An image that forms where light seems to come from a point but light rays don't actually meet is a 
a)
virtual image
b)
real image
c)
Inverted Image
d)
Pizza
65.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
66.

What do you call a flat mirror?

a)

plane mirror

b)

convex mirror

c)

concave mirror

67.

You see the reflection of the clock without numbers in your plane mirror. The image formed by the hands of the clock shows the time of 3:30. What is the real time?

a)

3:30

b)

8:30

c)

9:30

d)

10:30

68.

What is the distance of your image from you if you stand 1.5 m in front of a plane mirror?

a)

1.5 m

b)

2.0 m

c)

3.0 m

d)

4.5 m

69.

Zed stands 1.5-m tall in front of a plane mirror. What is the height of his image?

a)

4.5 m

b)

3.0 m

c)

2.0 m

d)

1.5 m

70.
When light reflects off of a completely smooth surface it is called:
a)
Specular Reflection
b)
Diffuse Reflection
c)
Optical Reflection
d)
Color Reflection
71.
Angles are always measured from the:
a)
Boundary
b)
Normal
c)
Incident Ray
d)
Reflected Ray
72.

When the image of an object is seen in a plane mirror, the image is _____.

a)

real and upright.

b)

real and inverted.

c)

virtual and upright.

d)

virtual and inverted.

73.

A plane mirror always produces ________images.

a)

virtual

b)

real

c)

ideal

d)

refracted

74.

The bouncing back of light ray

a)

Refraction

b)

Reflection

c)

Diffusion

d)

Dispersion

75.

What do you call a flat mirror?

a)

plane mirror

b)

convex mirror

c)

concave mirror

76.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
77.

When light bounces back it is _____

a)

reflected

b)

produced

c)

absorbed

78.

Shadow of an object is always

a)

Colourful

b)

White

c)

Black

d)

Transparent

79.

When green light falls on a blue object, the colour of the shadow is _______

a)

Green

b)

Blue

c)

White

d)

black

80.

which of the characteristics is not exhibited by the shadow of an object?

a)

erect

b)

same colour as the object

c)

can be formed on screen

d)

can be bigger than the object

81.

A plane mirror form an image of an object because it ........ light from the object

a)

Absorbs

b)

Emits

c)

Passes

d)

Reflects

82.

When the left side of an object appears as the right side of the image and vice versa, this phenomenon is called

a)

Literally inversion

b)

Lateral Invasion

c)

Lateral Inversion

d)

Literally Invasion

83.

Which is the primary colour?

a)

red

b)

purple

84.

Which is the secondary colours?

a)

orange

b)

blue

85.

Mix yellow and blue to make a new colour.What colour is it?

a)

orange

b)

green

86.

____+blue=purple

a)

red

b)

white

87.

White+_____=pink

a)

red

b)

black

88.

If mix black and white, what colour will you get ?

a)

blue

b)

grey

89.

Is yellow a primary colour?

a)

Yes,it is.

b)

No, it isn't.

90.

Is yellow a primary colour?

a)

Yes,it is.

b)

No, it isn't.

91.

Look at the picture,is it a secondary colour?

a)

Yes, it is.

b)

No,it isn't.

92.

Look at the picture,what colour of the umbrella ?

a)

green

b)

red

93.

What colour of the shoes?

a)

white

b)

black

94.

What colour of the swimming pool?

a)

white

b)

blue

95.

Which is the correct answer?

a)

blue+red=purple

b)

blue+red=orange

96.

Which is not the primary colour ?

a)

yellow

b)

green

97.

Which is not the secondary colour?

a)

yellow

b)

green

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