Lightning
Whats the cause of lightning?
Lightning is caused by electrical charges in a storm cloud with negative and positive electrons.
What happens to two objects with the same static charge?
They repel.
Two objects rubbing together.
What is an electric charge?
Most electric charge is carried by the electrons and protons within an atom.
How many planets are in the solar system?
8
What causes thunder?
Thunder is caused by lightning. When a lightning bolt travels from the cloud to the ground it actually opens up a little hole in the air.
What will happen to two objects with the opposite charge?
They attract.
What are two ways to increase friction?
Increasing applied force or making a rough surface.
What types of charges attract?
Positive and Negative.
Is the sun the largest in the universe?
No.
What types of damage cause?
Cloud to ground lightning can kill or injure people by direct or indirect means.
What are all things made from?
Atoms.
What would happen if there was no friction?
We would fall everywhere.
Wood is a:
- Conductor
- Insulator
Insulator.
True or False:
Static electricity constantly flows in the same direction.
False
How hot is lightning?
About 54,000 hot.
What happens to an atom if it loses electron?
It stays neutral.
Which surface has the least amount of friction:
- Concrete
- Ice
- Grass
Ice.
What kind of circuit allows a current to flow through it?
- Open
- Closed
- Broken
Open.
What increases friction?
Hard surfaces.
How long can a lightning bolt be?
60 miles or more.
What type of force does static electricity make?
Contact.
If we apply oil on door hinges what will the friction do?
- Decrease
- Increase
What makes up an atom?
Neutrons, Electrons, and Protons.
True or False:
When you build up electric charges on your skin it will discharge when you touch something metal.
True.