Show:
Kinetic and Potential Energy
Work
Simple Machines
Levers, Levers, Levers!
Energy Types
100
What type of energy does a bowling ball rolling down the alley have?
kinetic
100
Melissa lifted a sack of potatoes 1/2 m off the floor using 5N of force. How much work did she do?
2.5 J
100
What type of machine is used for a ramp?
inclined plane
100
What type of lever is a seesaw?
first class
100
What kind of energy is released because of friction? A. nuclear B. chemical C. thermal
thermal
200
What type of energy does a runner at the starting line have?
Potential
200
Macey pushed a table 2m with a force of 10N. How much work did she do?
20 J
200
What type of machine has two circular objects, where one is larger than the other?
wheel and axel
200
What type of lever does a wheelbarrow use?
second class
200
What kind of energy is found in food? A. electrical B. chemical C. nuclear
chemical
300
What type of energy does a car motor have?
kinetic
300
What unit do we use for work?
Joule
300
A machine can never be 100% efficient because of _________________________.
Friction
300
What type of lever has the load in the middle?
second class
300
What kind of energy is produced by moving electrons? A. chemical b. light c. electrical
electrical
400
What type of energy does a stretched rubber band have?
Potential
400
Ryan's car won't start, he tried to push it out of the road with a force of 45 N, but it wouldn't move! How much work did he do?
0
400
What type of machine has an inclined plane in a spiral?
screw
400
What type of lever has the fulcrum in the middle?
first class
400
What kind of energy is caused by a vibrating object transmitting energy to the air around it? A. sound B. nuclear. C. chemical
Sound
500
What type of energy is the total energy of motion (kinetic) and position (potential)?
mechanical energy
500
What two things have to occur in order for work to take place on an object?
1. The object has to move 2. The motion has to be in the direction of the force.
500
What type of machine has two inclined planes put together?
wedge
500
What type of lever has the input force in the middle?
third class
500
What type of energy is produced by vibrations of electrically chraged particles? A. sound B. light C nuclear
light energy