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REVISION - YEAR 7 PHYSICS

Total questions: 100

Worksheet time: 1hrs 2mins

Name
Class
Date
1.
Which of these statements is true?
a)
Light travels in straight lines.
b)
Light is stopped when it meets a solid object.
c)
Light does not travel in straight lines.
d)
Light will only travel for about 2000km before it stops.
2.
Which of these is not a source of light?
a)
a light bulb
b)
the Sun
c)
a mirror
d)
a TV
3.

Law of reflection state that - The angle of incidence is .................. to the angle of reflection.

(La ley de reflexión establece que - El ángulo de incidencia es .................. al ángulo de reflexión.)

a)

equal (igual)

b)

half (mitad)

c)

double (doble)

4.

If the angle of incidence is 20 degrees, what will be the value of the angle of reflection?

(Si el ángulo de incidencia es de 20 grados, ¿cuál será el valor del ángulo de reflexión?)

a)

0

b)

10

c)

20

d)

30

5.

In the diagram, which letter represents the angle of incidence?

(En el diagrama, ¿qué letra representa el ángulo de incidencia?)

a)

B

b)

C

c)

D

d)

E

6.

In the diagram, which letter represents the angle of reflection?

(En el diagrama, ¿qué letra representa el ángulo de reflexión?)

a)

B

b)

C

c)

D

d)

E

7.

The illustration shows a light ray striking an object.

In the illustration, the light ray striking the object is-

(La ilustración muestra un rayo de luz que golpea un objeto. En la ilustración, el rayo de luz que golpea el objeto es:)

a)

absorbed (absorbido)

b)

stopped (detenido)

c)

reflected (reflejado)

d)

refracted (refractado)

8.

The ray of light that strikes a reflecting surface is called ________.

(El rayo de luz que incide en una superficie reflectante se llama ________.)

a)

incident ray (rayo incidente)

b)

reflected ray (rayo reflejado)

c)

normal line (normal line)

9.

What is the value of the unknown angle (theta) in the following diagram?

(¿Cuál es el valor del ángulo desconocido (theta) en el siguiente diagrama?)

a)

60 degrees

b)

30 degrees

c)

90 degrees

d)

45 degrees

10.
How big will the angle of reflection be if the angle of incidence is 30 ° ?
a)
20 °       
b)
30 °       
c)
40 °       
d)
60 °
11.
Which property of light makes the the pen  in a glass looks broken?
a)
reflection
b)
refraction
c)
absorption
d)
brightness
12.
What property of light is represented by the picture?
a)
reflection
b)
diffraction
c)
refraction
d)
absorption
13.
The three primary colors of light are
a)
Red, Blue, Yellow
b)
Pink, Green, Blue
c)
Violet, Green, Red
d)
Blue, Green, Red
14.

The following diagram shows the ray diagram when a torch light is torched towards a mirror. Which of the following is the correct reflected ray?

a)
b)
c)
15.

Why does the straw appear to be bent?

a)

light is reflected

b)

light is absorbed

c)

light is turned

d)

light is refracted

16.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
17.
a)

A

b)

B

c)

C

d)

D

18.
what is the angle between the incident ray and the normal called as
a)
angle of incidence
b)
angle of reflection
c)
angle of convergent
d)
angle of divergent
19.

Which diagram correctly shows a ray of light reflected by a plane mirror?

a)
b)
c)
d)
20.

A student placed a pencil in a cup of water. The pencil appears broken because light

a)

always travels in a straight line.

b)

bends when it passes through water.

c)

makes the water in the glass evaporate.

d)

reflects the pencil on the water's surface.

21.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
22.

Glass has a _____________ density than air.

a)
Equal
b)
Greater
c)

Smaller

d)
Impossible to say
23.

A light ray is incident from water to air. Which of the refracted rays is correct?

a)

A

b)

B

c)

C

d)

D

24.

A ray of light travels from air into a glass block.


Which diagram correctly shows the path of the ray through the glass block?

a)

A

b)

B

c)

C

d)

D

25.

The angle of reflection is

a)

90 degrees

b)

55 degrees

c)

45 degrees

d)

135 degrees

26.

Which number represents the normal?

a)

1

b)

2

c)

3

27.

Refraction is when light...

a)

Bounces

b)

Transmits

c)

Bends

d)

Absorbs

28.

What is the angle of reflection equal to?

a)

The angle of refraction

b)

The angle of incidence

c)

The angle of absorption

d)

The angle of light

29.

What would you call this?

a)

Reflection

b)

Diffraction

c)

Refraction

d)

Friction

30.

When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,

a)

total internal reflection occurs.

b)

angle of refraction is equal to 90 degree.

c)

light is refracted out

d)

light travel in straight line

31.

What is total internal reflection

a)

Where a wave is refracted at the boundary between a dense medium and a less dense medium when the angle of incidence is greater than the critical angle.

b)

Where a wave is refracted at the boundary between a dense medium and a less dense medium when the angle of incidence is smaller than the critical angle.

c)

Where a wave is reflected at the boundary between a dense medium and a less dense medium when the angle of incidence is greater than the critical angle.

d)

Where a wave is reflected at the boundary between a dense medium and a less dense medium when the angle of incidence is smaller than the critical angle.

32.

When will total internal reflection occur?

a)

When light travels from a less dense to a more dense medium

b)

When the angle of incidence is smaller than the critical angle

c)

When the angle of incidence is greater than the critical angle

d)

When the light cannot pass through a medium

33.

When the angle of refraction is 90 °\degree  the angle of incidence is called the... 

a)

Angle of incidence

b)

Critical angle

c)

Angle of total internal reflection

d)

Angle of refraction

34.

see image

a)

A

b)

B

c)

C

d)

D

35.
What is the most prominent use of Fiber Optics today?
a)
Phones
b)
Television Screens
c)
The Internet
d)
MRI imaging
36.

see image

a)

A

b)

B

c)

C

d)

D

37.

What happens in the retina?

4 lines
38.

What part of the eye works alongside the lens to focus light?

a)

The cornea

b)

The iris

c)

The pupil

d)

The optic nerve

39.

The image on the retina is (a)   which means upside down

40.

What part of the eye detects light?

a)

The retina

b)

The CCD

c)

The photographic film

d)

The lens

41.

What does the iris do?

a)

transmits light rays to retina

b)

helps the eye focus

c)

sends messages to the brain

d)

regulates how much light enters the eye through the pupil

42.

solar

a)

renewable

b)

non-renewable

43.

oil

a)

renewable

b)

non-renewable

44.

water

a)

renewable

b)

non-renewable

45.

sheep

a)

renewable

b)

non-renewable

46.

steam

a)

renewable

b)

non-renewable

47.

wind

a)

renewable

b)

non-renewable

48.

coal

a)

renewable

b)

non-renewable

49.

natural gas

a)

renewable

b)

non-renewable

50.

renewable resource

a)

can be replaced

b)

limited amounts

c)

is being used up too quickly

51.
What is an example of a renewable resource?
a)
hydroelectric
b)
oil
c)
coal
d)
fossil fuel
52.

Resources that are not able to be reproduced as quickly as they are used are called _____.

a)

renewable resources

b)

replaceable resources

c)

non renewable resources

d)

non replaceable resources

53.

Geothermal energy uses heat from ____ to produce electricity.

a)

the earth

b)

coal

c)

oil

d)

natural gas

54.

Coal is burned to heat water so that the _______ can turn turbines.

a)

fire

b)

steam

c)

water

d)

heat

55.

Renewable resources ...

a)

are not replaceable

b)

are used more frequently than non renewables

c)

are never going to run out

d)

going to run out

56.

Which of these is non renewable

a)

natural gas

b)

water in a dam

c)

solar power

d)

wind energy

57.

Which of the following is a renewable resource?

a)

Oil

b)

Solar

c)

Coal

d)

Natural Gas

58.

Hyrdo Power is a __________ energy resource.

a)

Renewable

b)

Non-renewable

59.

Which of the following is a non-renewable resource?

a)

Water

b)

Wood

c)

Oil

60.
Do Renewable energy sources run out?
a)
Yes 
b)
No
61.
Where does most of earth`s energy come from?
a)
The sun
b)
Mars
c)
Wind
d)
Water
62.

Geothermal energy uses heat from hot rocks deep in the Earth's crust.

a)

True

b)

False

63.

Natural resources can be both renewable and non-renewable.

a)

True

b)

False

64.

Nuclear energy produces dangerous waste that remains radioactive for thousands of years. Is this an advantage or disadvantage?

a)

Advantage

b)

Disadvantage

65.

What type of energy is produced from flowing or moving water, usually from a dam?

a)

Geothermal

b)

Biomass

c)

Hydropower

d)

Solar

66.

Natural resources that cannot be remade or regrown close to the rate at which they are being used.

a)

Non-renewable energy

b)

Renewable energy

67.

Check all of the boxes that are FOSSIL FUELS.

a)

Oil

b)

Natural gas

c)

Coal

d)

Uranium

68.

What kind of energy comes from burning plant and animal waste?

a)

Geothermal

b)

Solar

c)

Wind

d)

Biomass

69.

Which of these are renewable resources?

a)

coal

b)

wind

c)

geothermal

d)

water in a dam

e)

biomass

70.

Solar Power is a __________ energy resource.

a)

Renewable

b)

Non-renewable

71.
What characteristic do all renewable resources share?
a)
Produced by waste products of animals
b)
Form underground from dead organisms
c)
Allow energy to pass through them easily
d)
Replaced in a reasonably short time period
72.
Trees, crops, garbage, & landfill gas are all examples of 
a)
Energy
b)
Biomass
c)
Heat
d)
Nuclear waste
73.
Which of these is a disadvantage of windmills?
a)
amount of land required
b)
time to construct one
c)
the availability of wind
d)
the location of reliable wind
74.

_________resources are all that exists without the actions of humankind.

a)

Natural Resources.

b)

Human Resources.

75.

Advantage of Energy resources.

a)

These resources are nearly infinite.

b)

A very large amount of energy could be generates in this way.

c)

Maintenance requirements are lower and save money

d)

Al of these.

76.

One advantage of solar and wind power over fossil fuels is that

a)

wind and solar are presently much less expensive than fossil fuels.

b)

wind and solar come from natural processes and fossil fuels do not.

c)

wind and solar are nonrenewable resources and fossil fuel are renewable.

d)

wind and solar are continuously renewable and fossil fuels take millions of years to be formed.

77.
what is a fossil fuel
a)
oil
b)
biomass
c)
wind 
d)
hydro
78.
Which renewable resource gets its direct energy from the sun? 
a)
Geothermal
b)
Solar
c)
Wind
d)
Hydrogen
79.

Gold is a renewable resource.

a)

True

b)

False

80.

The sun is a renewable resource.

a)

True

b)

False

81.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular 
d)
Irrational
82.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
83.
What type of galaxy has no defined pattern or shape?
a)
Spiral 
b)
Elliptical
c)
Irregular
d)
Constellation
84.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
85.
What is the name of our galaxy? 
a)
Our galaxy is called the Milky Way galaxy 
b)
Our galaxy is called the Andromeda galaxy 
c)
Our galaxy is called the Grand spiral  galaxy. 
d)
Our galaxy is called the Whirlpool galaxy.
86.
How many stars are in a galaxy.
a)
millions or billions
b)
thousands
c)
hundreds
d)
Ten
87.
What are in galaxies?
a)
ice and rock
b)
dust, gas, and stars
c)
stars and ice
d)
water and dust
88.
The Milky Way Galaxy is a 
a)
spiral
b)
lenticular
c)
elliptical 
d)
irregular
89.

I am a very small rock entering a planet's atmosphere.

a)

meteor

b)

meteorite

c)

asteroid

d)

comet

90.
Objects made of ice, gas and dust and orbit our sun are called:
a)
Asteroids
b)
Comets
c)
Meteroids
d)
Meteors
91.

When a meteoroid STRIKES the surface of the earth scientists refer to them as:

a)

Asteroids

b)

Comets

c)

Meteors

d)

Meteorites

92.

Where are asteroids found?

a)

Between Earth and Venus

b)

Between Jupiter and Saturn

c)

Between Saturn and Uranus

d)

Between Mars and Jupiter

93.

Which of the following celestial bodies has a long and lighted tail?

a)

Comet

b)

Asteroid

c)

Meteorite

d)

Mercury

94.
What do comets, asteroids and meteors all have in common?
a)
They all are made of ice
b)
They all hit Earth's surface
c)
They all orbit the sun
d)
They have nothing in common
95.

A meteor when it burns in the atmosphere is also known as a ____.

a)

rock

b)

shooting star

c)

ball of ice

96.

Where are most of the asteroids in the solar system located?

a)

Asteroid Belt

b)

Orion's Belt

c)

Gemini Area

97.

A meteoroid is found

a)

in Space

b)

entering earths atmosphere

c)

impacting earths surface

98.
What are comets made of?
a)
Metals like iron and nickel
b)
Gas
c)
Hydrogen Gas
d)
Ice and rock
99.

A meteor that does not burn up in Earth's atmosphere and reaches Earth's surface

a)

Meteorite

b)

Meteoroid

c)

Meteor

100.

What's the difference between comets and asteroids?

a)

Asteroids are made of metal and rock, while Comets are ice and rock

b)

Asteroids are made of ice and rock, while Comets are made of metals and rock

c)

There is no difference

d)

Asteroids are made of stardust, while Comets are made up of water