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اختبار الكتروني العلوم لغات الصف الرابع نموذج (1)
اختبار الكتروني العلوم لغات الصف الرابع نموذج (1)
نسخ
تكرار
اختبار خاص بالمعلم:
Nada Ahmed
إسمك
صفك
1
........... When the mass of the body is more
the force of collision is less
the force of collision is more
mass does not affect the force of collision
2
...... When a fast car collides a wall
the car keeps its energy completely
the car breaks
the car is not affected
3
The airbag inflates
before collision
during collision
after collision
4
The kinetic energy depends on
the height of the body above earth's surface
the temperature of the body
the speed of the body
5
The sum of the energies of balls before collision is the sum of the energies of balls after collision
greater than
less than
equal to
6
is example for biofuels .............
sugar cane only
corn only
all of the previous
7
.......... Airbags help in
decreasing the speed of person forward
decreasing the speed of person backward
increasing the speed of person forward
8
In Newton's cradle; a part of energy is lost in form of
electric energy
sound energy
light energy
9
From the disadvantages of coal as a fuel is that it is ............ resource
pollutant
clean
renewable
10
..... The kinetic energy of a vehicle increases when
its mass decreases
its speed decreases
its speed increases
11
Most of the lost energy inside the energy chain of devices escapes in form of
electricity
light
heat
12
......... We can convert solar energy to electric energy by using
solar panels
wind turbines
water
13
...... All of the following need fuels except
bike
warming
moving trucks
14
We can move the arms of toy trucks and toy planes remotely by using
solar cells
batteries
curiosity
15
Most of the energy chains start from
sun
earth
moon
16
The body which has more kinetic energy causes more damage due to
its low mass
its high speed
its low speed
17
converts the electric energy to light energy .........
fan
radio
bulb
18
The amount of energy transfer between 2 bodies when they collide depends on
their kinetic energy
their speed
all of the previous
19
The function of electric heater is to heat water but it produces some unimportant noise to operate it, this sound energy is
consumed energy
wasted energy
input energy
20
The wrecking ball has ........... when it moves
small kinetic energy as it is heavy
big kinetic energy as it is heavy
small kinetic energy as it is light
21
is used as sources of energy for robots in space .........
shot-term battery
food
solar energy
22
........ Fuel is the substance that produces thermal energy when it
dissolves in water
burns
is extracted from underground
23
Energy ............. help us to understand and follow the paths of energy
chains
resources
destruction
24
The formation of ...... is originated from the remains of plants
coal
oil
natural gas
25
is an energy resource which pollutes the environment ..........
Water
Sun
Coal
26
energy in turbines is used in operating the generator .........
Light
Thermal
Kinetic
27
is used to make ethanol and charcoal ...........
Wood
Herbs
Corn
28
Burning of fossil fuels is considered as one of the causes of
operating toys remotely
global warming
oil formation
29
is from the renewable resources of energy .........
Natural gas
Kerosene
Ethanol
30
The remains of plants and animals are converted to coal under the effect of
low temperature and pressure
high temperature and pressure
high temperature and low pressure
31
The scientists thought that oil is formed from decay of
dinosaurs
corn
sea-creatures
32
is from the energy resources available for use as an alternative to fossil fuel
Wind
Water
all of the previous
33
converts the kinetic energy to electrical energy ...........
turbines
generators
wires
34
is from the advantages of using the renewable resources ..........
increasing the temperature of the planet
cheap
no running out of energy resources
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