Vocabulary | ||
#1 | the push or pull of an object that causes it to move | force |
#2 | an object that makes work easier | simple machine |
#3 | a force that slows or stops movement between 2 surfaces | friction |
#4 | a force that pulls an object towards another object | gravity |
#5 | A v-shaped simple machine made up of 2 inclined planes | wedge |
Forces | ||
#1 | To move a heavier object, you must apply a _______ force | greater force |
#2 | What force moves an object away? | push |
#3 | Two boxes are pushed with the same amount of force. One is empty and the other has books in it. Which one will travel the farthest? | the empty box |
#4 | What force brings an object close to you? | pull |
#5 | Name 2 ways a force can change an object's movement? | start moving, stop moving, change direction, change speed |
Friction and Gravity | ||
#1 | What causes a box to move slower on carpet than on hardwood floors? | friction |
#2 | Rivers flowing downhill is an example of what? | gravity |
#3 | When you drop a ball, what is the force that pulls it towards the ground called? | gravity |
#4 | Name a way to lessen the friction of a heavy box. | add wheels, smooth surfaces, oil/wax, lighten it |
#5 | Which force makes it possible for you to walk? Think carefully!! | friction AND gravity |
Simple Machines | ||
#1 | Does a simple machine increase or decrease the amount of force needed to move an object? | decrease |
#2 | Which simple machine is used to split or cut objects? | wedge |
#3 | Simple machines increase the distance of a force and what else? | changes the direction |
#4 | What is a compound machine? | an object made of 2 or more simple machines |
#5 | Several simple machines can help you lift heavy object. What are they? | lever, inclined plane, pulley |
Name the Simple Machine | ||
#1 | Flagpole | pulley |
#2 | crowbar | lever |
#3 | knife | wedge |
#4 | bottle cap | screw |
#5 | doorknob | wheel and axle |
Final Question | |
Let's say you played cone ball in PE today. List the forces and examples of them that you used during the game. | adkfj |