Position and Motion
What is the location of an object called?
Position
What is a force?
A push or a pull and can change the motion of objects.
What is work?
Done when a force moves an object or changes an object's motion.
What is a machine?
Something that helps makes work easier to do.
What is motion?
Motion is a change in an object's position. Objects can move in different ways.
What are the four different types of forces?
1. Contact
2. Magnetism
3. Gravity
4. Friction
The ability to do work is called?
Energy
What are the six types of simple machines?
1. Lever
2. Pulley
3. Wheel and Axle
4. Inclined Plane
5. Screw
6. Wedge
How quickly an object moves is called?
Speed
What is friction?
Occurs when one object rubs against another -- a type of force.
What can energy do?
Move from one object to another. It can also change form.
What is made of two or more simple machines called?
Compound Machines
What tool measures distance?
Ruler or Meter Stick
What is an example of friction?
Rubbing our hands together, friction between the brake pas and the bike rim stops the bike.
What are two examples of work?
Picking up a book, writing on a piece of paper, playing an instrument, playing a sport, planting in the garden, shoveling the snow, building a sand castle, jump roping, etc.
Which of the following is a compound machine?
A. Lever
B. Inclined Plane
C. Scissors
D. Wheel and Axle
C. Scissors
Straight Line --> Spiriting on a track
Round and Round --> Figure Skater
Zigzag --> Snowboarder moves down the hill
Back and Forth --> Skateboarder moves back and forth
Which is an example of a contact force?
A. A magnet attracting a paper clip
B. Two magnets repelling each other
C. A bat hitting a ball
D. Gravity pulling on a leaf
C. A bat hitting a ball
How is an apple like gasoline to a car?
Some machines help you use less ___________ to do work.
Force