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G7 Midterm Revision

Total questions: 100

Worksheet time: 2hrs 0mins

Name
Class
Date
1.
Heat is a form of _______________.  
a)
movement
b)
energy
c)
melting
2.
Heat makes things _______________________
a)
colder
b)
warmer
c)
faster
3.

Which of the following is NOT a heat source?

a)
b)
c)
d)
4.

What is Earth's main heat source?

a)
b)
c)
d)
5.

Which shows the use of heat?

a)
b)
c)
d)
6.

Without the sun's heat, what would happen to earth?

a)

aliens would invade

b)

the earth would explode

c)

it would be too cold to survive

7.

What is a conductor?

a)

a material that heat moves through easily

b)

a material that heat does not move through easily

c)

a material that turns cold when heated

d)

a tool for measuring temperature

8.

What is an insulator?

a)

a material that heat moves through easily

b)

a material that heat does not move through easily

c)

a material that turns cold when heated

d)

a tool for measuring temperature

9.

Which of these is a better conductor?

a)
b)
10.

Which of these is a better insulator?

a)
b)
11.

Which of these is a measure of how hot or cold something is?

a)

temperature

b)

radiation

c)

insulation

d)

friction

12.

The tool used to measure temperature is called a/an

a)

insulator

b)

conductor

c)

thermometer

d)

radiation

13.

What temperature is shown on the thermometer?

a)

24°F

b)

24°C

c)

20°F

d)

30°C

14.
Can heat be created or destroyed?
a)
Yes
b)
No
c)
Only when things are cooling off
d)
Only when things are warming up
15.
When things are hot molecules are moving...
a)
Fast
b)
Slow
c)
They are not moving
d)
They are moving by not fast or slow
16.
When things are cold molecules are moving...
a)
Fast
b)
Slow
c)
They are not moving
d)
They are moving by not fast or slow
17.
Everything has heat
a)
True
b)
False
18.
Heat and Temperature are the same thing
a)
True
b)
False
19.
Heat that is transferred because of touching is called...
a)
Radiation
b)
Conduction
c)
Convection
d)
Reflection
20.
Energy that does NOT need a medium to transfer heat is called...
a)
Radiation
b)
Conduction
c)
Convection
d)
Reflection
21.
Energy that does need a medium (usually air or water) to transfer heat is called...
a)
Radiation
b)
Conduction
c)
Convection
d)
Reflection
22.
Heat passes from...
a)
High to low
b)
Cold to hot
c)
Hot to cold
d)
Heat cannot be passed
23.
Why do objects cool down?
a)
All heat will slowly be destroyed.
b)
The cold attacks the heat.
c)
Heat is always transferring so the heat will always move to a cooler place.
d)
The heat disappears.
24.
what is the meaning of convection?
a)
cold rises heat falls
b)
heat
c)
cold
d)
hot rises cold falls
25.
what kind of heat is happening when the sun heats your body
a)
conduction
b)
convection
c)
density
d)
radiation
26.
heat energy traveling through space is an example of _____
a)
convection
b)
density
c)
radiation
d)
conduction
27.
A group of friends gather around a fire to stay warm.
a)
conduction
b)
convection
c)
radiation
28.
The Gulf Stream is a current that brings warm ocean water from the south to the north.
a)
conduction
b)
convection
c)
radiation
29.
Warm air rises and the cool air sinks.
a)
conduction
b)
convection
c)
radiation
30.
In some cultures, walking on fire is the ultimate sign of strength.
a)
conduction
b)
convection
c)
radiation
31.
In this experiment, the WARM red dye and the COLD blue dye was placed in the water at the same time. The warm red dye rose to the top while the cold blue dye sank to the bottom.
a)
conduction
b)
convection
c)
radiation
32.
The candle will slowly heat the metal and transfer the heat directly to the mans hand.
a)
conduction
b)
convection
c)
radiation
33.
Heat transfers from an area of ____temperature to an area of ___ temperature.
a)
high to low
b)
low to high
c)
high to high
34.
If an object has greater mass, it has greater
a)
Temperature
b)
Thermal Energy
c)
Heat 
d)
All of the above 
35.
My hands feel warm because 
a)
The temperature is cold outside
b)
The molecules are moving
c)
The heat is transferring 
36.
Sum of the kinetic and potential energy of the particles 
a)
Thermal Energy
b)
Temperature
c)
Heat
37.
Average of kinetic energy
a)
Thermal Energy
b)
Temperature
c)
Heat
38.

Roofs blowing off in storm is because of high speed winds which create low pressure on outer surface of roof.

a)

True

b)

False

39.

Cyclones of American continent are called typhoons.

a)

True

b)

False

40.

The centre of a cyclone which is calm is called

(a)  

41.

Select the odd one out.

a)

Twisting funnel

b)

Tornado

c)

Sucks up things

d)

Thunderstorm

42.

Select the odd one out.

a)

Cyclone

b)

Tornado

c)

Typhoon

d)

Hurricane

43.

Winds are generated due to

a)

even heating of Earth

b)

uneven heating of Earth

44.

Smoke detectors/ fire alarms are placed

a)

on the floor

b)

near the door

c)

on a wall

d)

on the ceiling

45.

What happens during a thunderstorm?

a)

Rain

b)

Lightning and sound of thunder

c)

Strong winds

d)

All of the above

46.

On heating, air expands and

a)

becomes lighter

b)

rises up

c)

its volume increases and density decreases

d)

All of the above

47.

Which of the following is not a precaution against a cyclone?

a)

Construction of cyclone shelters in cyclone prone areas.

b)

Ignoring warnings given by government.

c)

Do not touch wet switches and fallen power lines.

d)

Drink only safe water.

48.

Which of the following areas is least likely to be affected by a cyclone?

a)

Delhi

b)

Orissa

c)

Chennai

d)

West Bengal

49.
A land breeze flows from the sea to the land
a)
true
b)
false
50.

A dark funnel shaped cloud that reaches from the sky to the ground is

a)

Hurricane

b)

Tornado

c)

Typhoon

d)

Thunderstorm

51.

Increased wind speed is accompanied by

a)

No change in temperature

b)

Reduced pressure

c)

Increased pressure

d)

No change in pressure

52.

What is the name given to the wind blowing from sea to land?

a)

Thunderstorm

b)

Land breeze

c)

Sea breeze

d)

Cyclone

53.

Which of the following plays an important role in the early-warning systems for cyclones?

a)

Helicopters

b)

Submarines

c)

Satellites

d)

Stars

54.

Which part of the earth gets the maximum amount of sunlight?

a)

North Pole

b)

South Pole

c)

Equator

d)

Tropics

55.

Which effect is created by high speed winds?

a)

High pressure

b)

Lightning

c)

Rains

d)

Low pressure

56.

What is another name for cyclone in japan ?

a)

Tornadoes

b)

Typhoon

c)

Hurricane

d)

Thunderstorm

57.

The instrument that measures the wind speed in a cyclone is

a)

Anemometer

b)

Barometer

c)

Thermometer

d)

Ammeter

58.

Which of these correctly defines wind?

a)

Moving air

b)

Hot air

c)

Humid air

d)

Cold air

59.

Which of these statements about air is incorrect?

a)

Air occupies space

b)

Cold air is lighter than warm air

c)

Air exerts pressure

d)

All of these

60.

The eye of a cyclone is

a)

an area of high pressure

b)

an area of low pressure

c)

an area with high speed winds

d)

none of these

61.

Which of the following phenomenon does not occur in the atmosphere?

a)

cyclone

b)

earthquake

c)

wind

d)

tornado

62.

Thunderstorms develop very frequently in areas having:

a)

polar climate

b)

tropical climate

c)

desert climate

d)

temperate climate

63.

Which of the following can move over the land without coming to an end quickly?

a)

cyclone

b)

hurricane

c)

typhoon

d)

tornado

64.

Would CYCLONES be more likely to occur with warm or cold weather?

a)

Warm

b)

Cold

65.

The monsoon comes to India from which direction?

a)

Northeast

b)

Northwest

c)

Southeast

d)

Southwest

66.

Name the instrument used to determine the direction of wind flow.

(a)  

67.

A severe form of ....................... leads to a cyclone.

a)

Heavy wind

b)

Thunderstorm

c)

Sea breeze

d)

Land breeze

68.

Leaves of trees, banner or flags flutter when wind is blowing. Why?

a)

Air occupies space

b)

Air is a mixture of gases

c)

Air exerts pressure

d)

Air is colourless

69.

When we blow over a paper strip it goes upward as shown in the figure given. why?

a)

Blowing over the paper reduces the air pressure above the strip

b)

Blowing over the paper increases the air pressure above the strip

c)

None of these is a correct reason

d)

The strip will not go upward at all

70.

The winds from oceans carry water and bring rain. These winds are called

a)

Typhoon

b)

Monsoon

c)

Cyclone

d)

None of these

71.

What is a cyclone?

a)

Winds from the oceans carrying water

b)

Very low pressure system with very high speed winds revolving around it

c)

Dark funnel shaped cloud that reaches from the sky to the ground

d)

None of these

72.

What is the definition of air pressure?

a)

The pressure the atmosphere exerts onto the Earth's surfaces

b)

The force of air on the atmosphere

c)

The pressure exerted by the weight of air in the atmosphere on Earth

d)

How the atmosphere exerts pressure through air

73.

In India the agency responsible for study of development and movement of cyclone is

a)

Indian forest department

b)

indian forensic department

c)

indian meteorologic department

74.

the pressure is exerted by the air in

a)

upward direction only

b)

downward direction only

c)

side ways only

d)

all the directions

75.

the safest way to protect yourself from the lightning is to

a)

run in the open field

b)

squat low on the ground

c)

take shelter under the tree

d)

keep your self covered with an umbrella

76.

causes all changes in the weather.

a)

wind

b)

rain

c)

sun

d)

none of these

77.

Air

a)

occupies space

b)

exerts pressure

c)

has mass

d)

all of the above

78.

What causes cyclones

a)

high speed wind

b)

air pressure difference

c)

both A snd B

d)

none of these

79.

which of the following is correct

a)

Greater the difference in pressure, the faster the air moves

b)

Air contracts on cooling as also upon heating

c)

Increased wind speed is accompanied an increase in air pressure.

d)

All of the above

80.

a child blowing air with a straw near the opening of another straw which has its other end in a soft drink bottle. It was observed that the level of the soft drink in the straw rises up as soon as air is blown over its open end. Which one of the following best explains the reason for rise in level of the drink?

a)

Blowing of air increases the pressure on the surface of soft drink in the bottle.

b)

The straw of the soft drink bottle collapses when air is blown over its open end

c)

Blowing of air warms up the air inside the straw.

d)

Blowing of air decreases pressure over the opening of the straw.

81.
Light is a KIND of ENERGY.
a)
True
b)
False
82.
All light has a SOURCE, or something it comes from. 
a)
True
b)
False
83.
The bouncing of light off an object is ....
a)
a mirror
b)
absorption
c)
reflection
d)
refraction
84.
Which of these describes how light travels through an empty space?
a)
It travels straight but may change direction to avoid objects.
b)
It changes direction often even if there are no objects. 
c)
It comes to a stop after it travels a certain distance. 
d)
It travels in a straight line without stopping. 
85.
What surface best reflects light?
a)
dull
b)
shiny
c)
clear
d)
black
86.
How does light travel
a)
It curves around corners
b)
Really slow
c)
In a straight line
d)
In circles
87.
Sunlight is
a)
not light at all
b)
red light
c)
yellow light
d)
white light
88.
Which of the following is the best reflector of light?
a)
Lens
b)
Microscope
c)
Mirror
d)
Prism
89.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
90.

Spherical mirrors are part of a

a)

Rectangle

b)

Cube

c)

Sphere

d)

Cone

91.

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)

clear image

92.

A dentist uses a small dental mirror to help magnify teeth in your mouth. What type of mirror is this?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

93.

A shopkeeper wants to keep an eye on his store in order to prevent shoplifting. What could the shopkeeper hang on the wall in order to see a wider image of his store and his customers?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

94.

A flat mirror is an example of a ___.

a)

plane mirror

b)

concave mirror

c)

convex mirror

d)

spherical mirror

95.

The side view mirrors on your car help shrink the image on both sides of the car, allowing you to see a larger field of view. What type of mirror is this?

a)

a convex mirror

b)

a concave mirror

c)

a convex lens

d)

a concave lens

96.
The following is a picture of what type of mirror? 
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
97.
The following is a picture of what type of mirror? 
a)
Convex Mirror
b)
Concave Mirror
c)
Plane Mirror
d)
Flat Mirror
98.

An image that forms when light rays actually meet

a)

virtual image

b)

real image

c)

diffuse reflection

d)

regular reflection

99.

The two types of spherical mirrors are ...............

a)

flat and plane

b)

concave and plane

c)

convex and concave

d)

plane and rectangular

100.

This is an example of a __________ mirror.

a)

Concave

b)

Convex

c)

Plane

d)

Diverging

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