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Steps
1) Bend the popper inside out.
2) Release the popper.

Describe the energy conversion
When the popper is bend inside out, elastic potential energy gets stored in the popper.
When the popper is released, the elastic potential energy is converted to kinetic energy which enables the popper to go up into the air.
The kinetic energy is converted into gravitational potential energy until a certain height. The gravitational potential energy is converted back to kinetic energy as it travels back down.

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Poppers Toys One that does not pop-up to the end, will it really pop-up?!!

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Nerf Gun

1.pull the reloader
2.push the trigger
3.released it

When we pull the reloader we will have Chemical Potential Energy. When we fire it, elastic potential energy converted to gravitational potential energy + kinetic energy+ heat energy+sound energy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Khalisah and Ezanne (not finished because don't have some materials) (G10)

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Khalisah and Ezanne (not finished because don't have some materials) (G10)

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Step 1. Hold the center tube (the straw that is supposed to help twist it) and the top.
Step 2.wind up the toy by twisting the straw and rubber band.
Step3. Let go of the doing thing and it will spin

This demonstrates two types of energy which is potential energy and kinetic energy .
Potential energy :When the rubber band is wound up tight it has alot of energy.
Kinetic energy :When you release the top of the spinning thing, the rubber band in winds quickly

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1.pull the car back
2.release the car

When I pull the reloader there would be Chemical Potential Energy
when I let go of the car there would be Gravitational Potential Energy,Kinetic Energy,heat energy,and sound energy

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pull then shoot
1.pull the rubber band with the chopstick
2.release it and the chopstick will travel in a further distance
describe the energy conversion

when i pull the rubber band which has elastic potential energy which is a stored energy.
when i released the rubber band ,the elastic potential energy will be converted to kinetic energy.
when the chopstick is being released with the rubber band,the kinetic energy will be converted to sound energy as it hit the ground and it will convert to heat energy as it touches the surface of the floor.

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1.Pull the sling shot
2.let go and try to not to hit anyone

Energy Conversion
When the sling shot is pulled back it has elastic potential energy.
When u let go, the EPE is converted to kinetic energy and gravitational potential energy in the flying stone.

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Pop and Catch the Ball (G8)

Steps
1) Put the ball inside the basket.
2)Push the trigger.
3)Try your best to catch the ball.

Describe the energy conversion

When I trigger the holder, there will be chemical potential energy in person is converted to  kinetic energy of the finger which is converted to kinetic energy of the plastic strip in the basket and then converted to kinetic energy and gravitational potential energy of the ball.

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Ping Pong Ball Gun

Steps:
1. Put ball in cup
2. Pull the balloon
2. Release the balloon

Describe the energy conversion
When I pull the balloon elastic potential energy gets stored in the balloon .
When the balloon is being released elastic potential energy is converted to kinetic energy which enables the paper ball to pop up into the air.
The kinetic energy is converted to gravitational potential energy when the paper ball has reach a certain level.
The gravitational potential energy is then converted back to kinetic energy once it has reached the ground.

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Motor Cycle Toy
Steps
1)Pull the motor cycle backwards
2)Let go of the motorcycle
3)Watch the motorcycle move

Description of energy conversion
Chemical Potential Energy(from our bodies),covert to Kinetic Energy(from the time we pulled the toy backwards),Kinetic Energy(as the toy moves),converted to sound+heat energy(as the motorcycle moves forward)

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Ho Hui Ni and Lei Jia Qian and Cheryl (G4)

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Ho Hui Ni and Lei Jia Qian and Cheryl (G4)

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Catapult

Steps
1.put the marble on the cap

2.pull the cap backwards
3.let go of the cap

Describe the energy conversion
when I pull the cap there will be elastic potential energy stored in the rubber band. When the cap is released, the elastic potential energy is converted to there will be kinetic energy and gravitaional potential energy of the ball. When the marble hits the ground the kinetic energy will convert into sound and heat energy.

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Steps
First you put your finger in the hole then, you release the yo-yo.

Describe The Energy convertion•
The yo-yo at first have gravitational potential energy after releasing the yo-yo, the gravitational potential energy decreases while kinetic energy increases, after that there will some sound energy.Then the yo-yo goes up and gravitational potential energy increases while the kinetic energy decreases,the yo-yo will slow down if you stop producing kinetic energy from your hand.