5 نسخة المعلم

اختبار الكتروني العلوم لغات الصف الرابع نموذج (2)

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........ The primary source of fuel is
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.......... is from the non- renewable resources of energy
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......... The available quantities of fossil fuels on earth is
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........ Biofuel renews continually with
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Under the effect of pressure and temperature, the remains of .... are
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...... Energy is not destroyed nor created and this is the law of
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.......... Charcoal is made from
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The source of energy in alarm is the batteries which store ..... energy
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energy is from the energy inputs in mobile phone ...........
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The electric power plants use coal which stores ........... energy
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......... The calculator that works by solar energy contains
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.The input energy in the hair dryer is ............ energy
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The sensors in Curiosity work by ........ energy
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On burning coal, the chemical energy is converted to ........ energy
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The kinetic energy of the bike transfer to ....... when it hits a bread cart
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..... Fossil fuels are extracted from
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When the collision happens, the airbags ........... at very high speed
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..... All of the following are renewable resources of energy except
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body has high kinetic energy ..........
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The electrical energy resulted from the kinetic energy of water is called
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......... On collision
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Oil does not mix with water because they have chemical structure
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...The fruit trees convert light energy to chemical energy in form of
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Charcoal is from ......... fuels
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The rate of consumption of .......... is faster than the rate of its renewal
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...... Chemical energy is converted to kinetic energy on
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...... The source of ethanol is
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The ecologists study the motion of ..... in hard ecosystems such as the bottom of ocean
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The gas heater converts ....... energy to thermal energy
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....... According to the law of conservation of energy
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...When a heavy body hits a light body moving with high speed ,so
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The spacecraft takes six ....... or more to reach Mars
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Walid plays cricket where he takes the ball by a bat, then he directs it to his friend, what happens
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When the mass of the body decreases to quarter, so its kinetic energy
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Nour entered the classroom, and collided with her desc and it fell
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If the truck moved at speed equal to the speed of the car, so the truck has
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........... The seatbelt in car is used to
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.........., When a rock hits a glass window
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When a body collides with another one, it transfers some of its energy in form of
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when 2 bodies collide, transfer of ........ occurs