Moving gears use this type of energy - potential, mechanical, chemical or nuclear.
What is mechanical.
100
This type of energy is when something has the potential to fall, but isn't falling yet. (gravitational potential energy or gravitational kinetic energy)
What is gravitational potential energy?
100
Forces are balanced when this is true. Things are moving or not moving?
What is not moving?
100
This is what speed =
What is distance/time.
100
This type of system has both matter and energy flowing through it.
What is an open system.
200
A windmill converts wind energy into this kind of energy.
What is mechanical.
200
As an object's motion increases (gets faster) this is what happens to the potential energy.
What is it decreases?
200
This describes a point during the flight of a model rocket when this forces are unbalanced.
What is when the rocket is going up and when the rocket is coming down?
200
This is an example of a correct unit for speed.
What is a distance unit/a time unit.
200
Which is true? a) Energy can flow only into a system. b) Energy can flow only out of a system. c) Energy cannot enter or leave a system. d) Energy can flow in and out of a system.
What is d only.
300
What are the energy inputs and outputs of a light bulb?
What is electricity (input) and heat and light (outputs)?
300
These are two points when the potential energy and the kinetic energy of this pendulum are the same.
What is points b and d.
300
When a wooden block is dragged to the rights, this is the direction of the force of friction.
What is to the left?
300
This is the speed in mi./min. if a car goes 10 miles in 20 min..
What is 0.5 mi./min.
300
This is a subsystem of a bicycle.
What is go, stop, wheels, frame? Answers may vary.
400
This is an energy transformation sequence that is appropriate for a burning match.
What is chemical to heat and light.
400
This describes a time when a roller coaster car has high potential energy.
What is the top of the track?
400
When something isn't moving, the forces on it are this.
What is balanced?
400
When graphing speed these units are on the x and y axis. When graphing acceleration (the change in speed over time) these units are on the x and y axis.
What is time (x), distance (y) AND time (x), speed (y).
400
This is a subsystem of a flashlight.
What is battery case or handle and gears, bulb and wires, case, switch, etc.
500
This is an energy transformation sequence that happens in a flashlight.
What is chemical to electrical to light and heat.
500
After a rocket is fired, this is when it has the most potential energy.
What is the highest point in its flight.
500
This explains why a book sitting on a table doesn't fall to the center of the Earth.
What is the table is pushing up on the book with the same force gravity is pulling down?
500
This is the speed of a car that goes 10 mi. in 0.5 hr.
What is 10 mi./hr.
500
This is two reasons IPADs are better than desktop computers.
What is they are portable, they have touchscreens so you don't have to type, they have more apps so they are more versatile, etc.