Show:
Speed, Acceleration and Velocity
Energy
Vocabulary
Electricity
Simple Machines
100
A dog ran 10 meters in 5 seconds. What is his speed?
2 m/s
100
What is energy of motion?
kinetic energy
100
The energy stored in an object.
potential energy
100
What part of an atom causes electricity?
electron
100
What simple machine uses a rope paired with a wheel to help lift an object?
a pulley
200
If you are building a racetrack and you want your car to go as fast as possible, which material would you build it out of? gravel plastic carpet sand
plastic (because there would be less friction)
200
What energy transformation happens when a roller coaster rolls downhill?
potential energy changes into kinetic energy
200
A push or a pull
force
200
What is a circuit with a gap that electricity cannot flow through?
open circuit
200
What simple machine includes a fulcrum?
a lever
300
You are planning to drive to Disney World (to see Asa, of course)! If Orlando is 585 miles away, and you plan on getting there in 9 hours, what will your velocity need to be?
65 mph south
300
What form of energy does a car's engine change into mechanical energy to make the car run?
potential chemical energy
300
Speed in a given direction
velocity
300
What are the three parts of a circuit?
load source conductors
300
How does an inclined plane make work easier?
it decreases the amount of effort (or force) needed to lift an object, it gives a mechanical advantage
400
On a distance/time graph, what does a horizontal line mean? The object sped up The object slowed down The object stopped moving The object remained at constant speed
The object stopped moving
400
In a car's engine, this form of energy comes from the friction of parts rubbing against each other.
Thermal energy
400
A circuit with no gaps that electricity can flow through
closed circuit
400
What type of circuit are Christmas lights?
series circuit
400
Which simple machine would you use to life an object 40 meters off the ground?
a pulley
500
On a distance/time graph, which is the x-axis? Distance Time Speed Velocity
Time
500
What does the Law of Conservation of Energy state?
Energy cannot be created or destroyed. It changes from one form to the next.
500
Energy that is measured by particle movement
thermal energy
500
What do we call a material that IS NOT a good conductor of electricity?
an insulator
500
In a first class lever, if the length of the effort arm is 20 cm and the length of the resistance arm is 2 cm, what is the mechanical advantage of the lever? WHAT DOES THIS MEAN?
10 You can lift the resistance with 1/10 the effort, even though you will have to push farther.