Show:
Which simple machine
Vocabulary
Motion, Speed and Velocity
Friction and Gravity
This-n-That
100
stiff bar that moves freely on a fixed point 
What is a lever?
100
an object that changes a force 
What is a simple machine? 
100
motion and position are related because..
What is...if an object is in motion it is changing its position. 
100
force is ____________
What is a push or pull?
100
a simple machine made up of two include planes 
What is a wedge? 
200
made of a slanted surface 
What is an inclined plane? 
200
pushes or pulls that cause objects to change their motion 
What is force? 
200
two measurements needed to calculate an object's speed
What are distance and time 
200
a smooth surface has _____________ friction. 
What is less?
200
Simple machines are useful because...
What is... they help people do work by changing a force? 
300
two cylinders that turn on the same axis 
What is a wheel and axle? 
300
a force that slows or stops motion between two surfaces 
What is friction? 
300
every ___________ has a speed 
What is motion? 
300
A rough surface has _______________ friction 
What is more?
300
Name two ways a simple machine can change a force 
What is...changing direction of the force AND increasing the distance over which a force is used 
400
incline plane wrapped around a post
What is a screw? 
400
a force that pulls objects toward each other 
What is gravity? 
400
speed and direction determine ________
What is velocity? 
400
If a person is snowboarding or ice skating they need __________ friction. 
What is less? 
400
Simple machine that is a flag pole or sails on a ship
What is a pulley?
500
a rope fitted around a fixed wheel 
What is a pulley? 
500
a change in an object's position as compared to objects around it 
What is motion? 
500
Force affects speed and motion because if you push an object, you 1. _________ its speed and motion. 


If you pull an object, you can 2. ______ or ________an object's speed and motion. 

1. What is increase?

2. What is stop/slow down? 

500
_________________ is a force that pulls objects toward each other. 
What is gravity? 
500
fixed point of a lever
What is a fulcrum?