Scientific Definitions
The buildup of electrical charge on material is called ___________.
Static Electricity
Lightning is the result of __________.
Static electricity that builds up in storm clouds.
When you hit a baseball, you put ______ on it.
Force
When clothes rub together in a dryer, ______ charges build up on them.
Electric
______ is which way a force pushes or pulls.
Direction.
_________ forces are forces that together do not cause a change in motion.
______ electric forces cause lightning.
Strong
2 forces can have the same _______ but different _______.
Direction, strength.
An imbalance of ______ and _______ charges causes static electricity.
positive, negative.
Objects are covered in electric charges, but the charges are too _____ to see.
_____ is a force that pulls down.
Gravity
Positive and negative charges gather in different parts of the clouds. When this happens they ______ and pull toward each other.
Attract
Forces have _______ and ______.
Strength and direction.
Objects charged with static electricity can _____ or _____ with electric force on another object.
Pull, push.
Unlike charges ______.
Attract.
______ are forces that together cause a change in motion.
Unbalanced forces
Lightning can be very dangerous. It can cause fires and can kill living things. Where should you stay to stay safe during a lightning storm?
In the car or indoors.
An apple rests on a hand. What forces are acting on the apple?
Gravity
When you rub a balloon on your hair, what forces cause the balloon to lift your hair.
Electric forces.
Like charges ________.
Repel.
_____ is how hard a force pushes or pulls.
Force
Lightning can occur in one ______ or between _______.
Cloud, Clouds
If 2 teams are beginning a game of tug of war, why does the rope not move when both teams start pulling on the rope?
Balanced forces are acting on the rope. They are pulling in opposite directions with equal strength.
Electric charges _____ when clothes rub together in the dryer.
Build up.
Electric charges ______ to each other.
React.