Forces and Motion
Why do rollercoasters go faster when they start on a higher hill. Think in terms of energy.
The higher the hill, the more stored energy an object has.
Why would dominoes have more energy than marbles?
Dominoes are taller then marbles so they have more height energy.
what side of the LED light bulb was the positive side?
The longer side.
If you live in an area that does not have a lot of sun and is not near water, what would be the best source for natural energy?
Wind would be the best source for natural energy.
It wants to stay in motion unless something else acts on it.
Where did we see stored energy in our chain reaction machines?
The marbles on top of the ramp, the dominoes, the jenga blocks, etc...
What direction does energy flow in for electricity
Negative to positive
How do you know sound energy is released?
You hear something either a bang or some other sound.
What happens to objects at rest?
They stay at rest unless something else causes it to move.
How was energy transferred in the music video we saw.
One object hit another one which allowed the second object to move.
What was the conductor we used in our experiment
Aluminum foil
How do you see heat energy being released?
Steam, red metals,
What caused the bumper marbles to stay safe?
You had to release the hill marble at the lowest height.
What do you need for a chain reaction to be successful?
You need enough energy at the beginning to transfer through to each object.
What is a conductor?
A material that allows electricity to travel through it.
What other energy sources could we use here?
Wind, solar, water
Where did the marbles all have to be in the second roller coaster experiment so that all the marbles made it to the end? Why?
All marbles had to be on the top of the hill so they had enough stored energy from the hight.
What happens to energy in chain reaction machines?
It is transferred from object to object. Some energy is also released as sound.
What are three things that you need for your flashlight to work
1. a path for electricity to follow.
2. the path must be made from a conducting material.
3. energy can only go in one direction.
What other sources of energy did we talk about?