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Energy
Vocab
Skydivers & Roller Coasters
Fun facts
100
What type of energy is given to the roller coaster when it reaches the top of the first hill? The higher that the first hill is the more energy that the roller coaster will have.
Potential Energy
100
What is the force that pulls objects toward each other? This is the force that acts on a roller coaster that allows it to make it from the beginning to the end.
gravity
100

These two forces would act on a skydiver as they jumped out of a plane.

gravity and friction(air resistance)

100

The roller coaster Space Mountain can be found at this theme park.

Disneyland

200
What type of energy is due to an object's motion? The motion of the roller coaster is turned into this kind of energy, that is also known as the energy of motion.
Kinetic Energy
200
What is the rate at which velocity changes? ...increasing speed, decreasing speed and changing direction. When a roller coaster picks up speed going down a hill over time, this is known as ?
acceleration
200

Skydivers can increase their speed by tucking in their arms and legs to reduce this.

Their surface area.

200

Modern roller coasters are made of steel and use magnets to move the cars smoothly. This wooden roller coaster still operating in California is at Knott's Berry Farm.

Ghost Rider

300
Potential Energy increases as what decreases?
Kinetic energy
300

The force between objects that slows or stops them moving. 

friction
300

The speed of a roller coaster can be increased by doing these 3 things.

Increasing the force, increasing the weight, or increasing the potential energy it starts with (a higher first hill).

300

Skydivers stop accelerating when they reach the "terminal velocity."  Terminal velocity is the speed at which this force acts against gravity.

friction, or air resistance

400
Potential Energy relies on mass and what?
Position
400
This is the speed and direction of an object. An example is a skateboard going 12 m/s up a ramp.

velocity

400

A roller coaster will be at it's slowest when . . .

 . . . it's traveling up a hill.

400

At what point does a roller coaster have the most potential energy?

From the top of the first hill a roller coaster has as much energy as it will for the entire rest of the ride.

500
Where will there be the maximum Potential Energy on a Roller Coaster?
At the top of the first lift hill
500

This law of motion says that, " an object in motion tends to stay in motion, while and object at rest tends to stay at rest."

inertia

500

In a roller coaster, energy that is lost by the cars turns into these 2 things.

sound and heat

500

In a steam engine, a turbine is spun extremely fast by steam. The type of energy that is being converted into electricity is . . . 

 . . . kinetic energy