Forces
the weight of the object being moved
what is load
a block and tackle pulley allows you to use ____ force when lifting an object because the rope moves a greater distance
what is less
a push or a pull
what is force
Yes
two forces we interact with every day
what is friction and gravity
an object that makes work easier
what is a simple machine
a wedge is one or more ___ used to force materials apart
what is inclined planes
a screw is a ______ around an axle
what is an inclined plane
Nicky Nicole had a wagon with her two kids and did not move it. Was work done?
No
a greater mass requires a _______ force to move it
what is greater
the force that pulls objects toward the earth
what is gravity
a pulley is a ____ with a groove that can hold a rope
what is wheel
Panera Bread pushed her child on the swing. Was work done?
Yes
a force moved over a distance is
what is work
the force applied to cause a simple machine to do work
a bar that turns on a point
false
A Domino's pizza stayed in a box and did not move. Was work done?
name all six simple machines (this is all or nothing)
1. pulley
2. wedge
3. inclined plane
4. wheel and axle
5. screw
6. lever
the force that resists the movement of objects against each other
what is a friction
the inclined plane on a screw is _____
what is a thread
what are the two different types of wheel and axle
1) force is applied to the axle that turns the wheel
2) force is applied to the wheel that turns the axle
Plus 500 points :)
Name something you learned NEW in science in this unit.
answers will vary but must be approved by teacher