Question | Answer |
Work | is done when a force moves something |
force/distance | Work is the measured by the amount of_________ times______________ |
Easier | Simple machines make work____________ |
Energy | is the ability to do work. |
kinds | there are many _______ of energy |
change | Energy can _________ from one form to another |
stored | Batteries, food, and fuel have energy that can be used later to do work. This kind of energy is called _______ energy. |
light | light, bolt sunlight, candle flames |
electrical | iron, cooking, computer, cell phone |
mechanical | walking, running, moving, bike pedals, coasting downhill. |
Friction | A force that slows or stops motion |
Magnetism | The force of a magnet |
Gravity | The force that pulls objects toward the center of the earth |
Force | A push or pull |
Weight | The amount of force gravity has on an object |
True | Objects cannot move unless a force causes them to move |
the same | An object moves ___________ direction as the force it moves in |
Easier | Simple machines make work _______ |
True | There are many kinds of energy |
True | Batteries, food, and fuel are examples of stored energy |
Motion | is a change of position |
Direction/far | Motion can be described by what _____ an object is going, how _______ it is going, and how fast it is going |
faster/direction/slow down | A force can make an object go |
Energy | is the ability to do work |
changed | Energy can be ____________ from one form to another |
stored | Energy that can be used later to do work is called ____________ energy |
light/mechanical | Sound, ______, electrical energy__________ energy, and chemical energy are different kinds of energy. |
When is work done? | Work is done when a force moves it. |
What are five things that can do work? | flowing water moves logs, rocks, boats, and water wheels |
How is work measured | Force x distance= work |