Position and Motion
Forces
Work and Energy
Using Simple Machines
Changes in Matter
100
What type of motion is this? 
zigzag
100
What force holds you down on Earth?
gravity
100
What is work?
Work is when a force moves and object of changes it's motion.
100
Name three simple machines.
lever, pulley, wheel and axle, inclined plane, screw, wedge
100
What are some signs of a chemical change?
bubbles, heat, light, color change (others)
200
What is the distance between the toy tiger and the toy frog? (p.435)
10cm
200
What force does a magnet have?
magnetic force
200
If I push a mountain, is work done?
No, because it doesn't move.
200
What simple machine uses a rope?
pulley
200
Can lava freeze?
Yes (rocks)
300
What type of motion does a swing have?
back and forth
300
What requires more force to move: 10kg of metal or 100kg of feathers?
100kg of feathers
300
Give an example of energy moving from one object to another?
(Many answers can be given)
300
What is the triangle called?
fulcrum
300
Is rusting a chemical or physical change?
chemical change
400
How can you measure distance?
tape measure, ruler, meterstick, yardstick, etc.
400
What is an example of a non-contact force?
magnetism, gravity, radiation (light), electric
400
What do we call energy of moving things?
kinetic energy
400
What is a machine?
Something that makes work easier to do.
400
What is an example of a solution?
salt water (others)
500
If you travel 100km in two hours, what was your speed?
50km/h
500
How can you reduce friction?
Add slippery things
500
What are some things that have potential energy?
Gasoline, wood, food, etc.
500
What machine is a giant spinning screw?
auger, drill
500
What is it called when gas changes into a liquid?
condense