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WorksheetsAdel Science CH 2 lesson 1&2
Total questions: 73
Worksheet time: 37mins
Energy !!
A force that opposes the motion of an object .
the ability to do work or to cause change .
Any pull or push
Sun is the main source of energy on Earth .
true
false
Energy from the sun !
helps the plant to grow
helps wind to blow
helps water to move through water cycle .
is not important for living things .
The movement of electrical charges !!!
sound energy
kinetic energy
electrical energy
potential energy .
Which of the following does NOT an example of sound energy ?
iron
t.v
guitar
radio
Energy we can see !!
sound energy
light energy
electrical energy
heat
the transfer of energy from warmer object to a colder object !!
Heat
sound
light
potential energy
Energy that motion or position gives to an object !!!
potential energy
kinetic energy
mechanical energy
sound energy
You use mechanical energy when you use an object with moving parts !
true
false
.....................................energy !!
sound
potential
light
kinetic
Sound energy !
An example of potential energy !
IS NOT a source of light energy !!
Energy we can hear !!
light energy
potential energy
kinetic energy
sound energy
Is an example of sound energy !!
A lamp
Sun
A stove
musical instrument
Use mechanical energy !!
tooth brush
lamp
alarm clock
A bike
Stored energy !!!
sound energy
kinetic energy
potential energy
mechanical energy
Energy can be stored .
true
false
Is NOT an example of Potential energy !
being ready to slide down on a slide
being ready to kick a ball
hiking a mountain
stretching or compressing an object
He is ready to hit the ball !!
light energy
potential energy
kinetic energy
Is NOT an example of potential energy !
Changes electrical energy into light energy .
true
false
Kinetic energy
true
false
Mechanical energy
true
false
light energy
heat energy
mechanical energy
potential energy
potential energy changes into another kind of energy if you use it to do work or cause a change !
true
false
food , fuels and batteries have stored chemical energy .
true
false
potential energy can be changed into kinetic energy!
true
false
Is an example of potential energy changing into kinetic energy !
stored energy in food help you move and keep yourself warm .
A car changes the chemical energy stored in fuel into kinetic energy
An iron uses electricity to produce heat .
The snowboarder's potential energy due to gravity changes to kinetic energy
releasing a stretching spring
there are different forms of energy !
true
false
Energy can not change from one form to another !
true
false
Energy does not go away !
true
false
Energy of motion !!
potential energy
kinetic energy
electrical energy
What is NOT true about energy ?
Energy can be transferred from an object to another .
Energy has more than one form .
Energy can be stored
Energy is only electrical .
Energy can travel as waves !
true
false
Forms of energy that travel as waves !
light
mechanical
sound
kinetic
A disturbance that carries energy from one point to another !
energy
wave
battery
midpiont
The shape of a wave tells about how much energy it carries !
true
false
Trough !!
the length of a wave .
the bottom of a wave .
the top of a wave
the distance from one crest to the next crest .
Crest is the bottom of a wave !!
true
false
the top of a wave !
crest
trough
the top of a wave is a trough !
true
false
The top of a wave !!
trough
crest
Which is Not true about a wave ??
A crest is the top of a wave .
wavelength is the distance between one crest and the next crest .
waves with shorter wavelength have LESS energy than waves with longer wavelength
waves with shorter wavelength have MORE energy than waves with longer wavelength
Waves with greater distance from the midpoint to a crest or a trough have MORE energy than waves with less distance .
TRUE
FALSE
Waves with longer wavelength have less energy .
true
false
The shorter a wave is, the less energy it has .
true
false
Which wave do you think has more energy ?
the red wave has more energy than the blue one .
the blue wave has less energy than the red one.
the blue wave has more energy than the red one.
Which wave do you think has less energy ??
A wave with shorter wavelength has more energy .
A wave with longer wave length has more energy .
A wave with shorter wavelength has less energy .
The size of a wave depends on how much energy it carries .
true
false
Electric current !!
the number of electric charges in a matter.
the movement of electric charge from one place to another .
the number of negative charges in particles .
Electric circuit is .......................................
the movement of electric charges from one place to another .
the number of electric charges in particles .
the path through which a controlled electric current flows .
A circuit with no gaps or breaks !
closed circuit
open circuit
A circuit with a broken bath !
closed circuit
open circuit
Current will not flow through a closed circuit .
true
false
Which of the following can make a circuit open??
A battery fixed in a correct way .
A disconnected wire from the battery .
switching off the circuit
switching on the circuit .
the light will turn on if ,......................
the circuit is closed
the circuit is open
the circuit is switched off
A current flows through an open switch !
true
false
When you open a switch ,....................
the current stops .
the current will keep flowing
A material through which electric charge can move easily !!!
conductor
insulator
Metals are good conductors .
true
false
Graphite and water are NOT conductors !
true
false
A material that can stop the movement of electric charge !
conductor
insulator
Are good conductors !
rubber
copper
plastic
gold
silver
Are NOT conductors !!
gold
copper
rubber
plastic
graphite
Electric wires have a covering of plastic or rubber , because .........................
plastic and rubber are good conductors .
plastic and rubber are insulators and make it wires safe to handle .
electric charge flows easily through plastic and rubber .
Metals are good conductors , because .......................
electric charge can not move easily through metals.
Metals can stop the movement of electric charges .
electric charge can move easily through metals.
Which of the following is Not a conductor ??
A rubber band
A plastic cup
penny
A paper clip
When you turn on the switch on the wall , the circuit is closed so electric current can flow .
true
false
Circuits will only work when.........................
they are closed.
they are open
they are broken
they are incomplete
Which of the following are insulators ?
wooden door
silver spoon
paper clip
water
copper wire
