Atoms
what are the 3 subatomic particles?
Protons, neutrons, electrons
Is static electricity a contact or non-contact force? Why?
Noncontact because the force occurs without objects touching
What is the south pole attracted to?
The north pole
Is gravity attractive or repulsive?
Gravity is an attractive force
Name the three non-contact forces
-Electrostatic force
-Magnetic force
-Gravitational force
What are the charges for each?
Proton
Electron
Neutron
Proton= positive
Electron= negative
Neutron= no charge/neutral
What charges do objects have in order to feel attraction?
Opposite (positive and negative)
What is the name of the invisible space where magnetism between magnets can be felt.
The magnetic field
Which object feels earth's gravity more an ant or an elephant? Why?
An elephant because it has more mass
What is the subatomic particle that transfers to cause a static charge?
electron
What particles are located in the nucleus?
Protons and Neutrons
What charges do objects have in order to feel repulsion?
Same charges (+ +, - - )
How can you describe the movement of the electrons in a magnetic material?
They are aligned and move in the same direction
what 2 characteristics define gravity?
Distance and mass
How can you increase the strength of a non-contact force?
Decrease the distance or increase the charge
What is the area called where electrons can be found circling the outside of an atom?
The electron cloud
What are 2 examples of a static electrical discharge?
Your hand getting zapped on a doorknob
Lightning strike
What happens when you break a magnet?
The movement of atoms/electrons changes and the broken piece will create its own new north and south pole
Which object feels earth's gravity more?
a 15 kilometer planet 10,000 lightyears away from earth
or a 15 kilometer planet 16,000 lightyears away from earth
a 15 kilometer planet 10,000 lightyears away
Where on a magnet is the magnetic field strongest?
A.) The North pole
B.) The South pole
C.) Both North & South Poles
D.) The middle of the magnet
C.) Both North & South Poles
How does an atom get a negative charge?
Positive charge= Lose electrons
Negative charge= Gain electrons
What is the difference between an electric conductor vs. an electric insulator?
An electric conductor allows electrons to easily pass through it. An electric insulator prevents electrons from easily passing through it.
How is the earth like a giant magnet?
The core of the earth is made of magnetic iron and as it spins internally it creates a giant magnetic field with a north and south pole
What are two things you could do to a pair of objects to increase their gravitational pull on each other?
1. Increase the mass of the objects.
2. Decrease the distance between the two objects.
Give me one example of an electric conductor, and one example of an electric insulator.
Electric Conductors:
Electric insulators: