Gravitational Forces
What is gravity?
a force that exists between any objects with mass
Opposite poles ________
Attract
How do you represent an electric field in a model drawing?
Using + and - signs
Like charges______and opposite charges_______
1. repel
2. attract
True or False, Mass and weight are the same thing. Explain your answer.
False, your mass stays the same but your weight changes due to the amount of gravity.
Like poles ________
Repel
How does an object become charged?
When it exchanges electrons with another object.
What part of a atom are positively charged?
protons
During the dropped Donkey/horse experiment, what did the donkey/horse with the parachute experience on the way down to earth?
Air resistance
Where is the magnetic field around an object the strongest?
The poles
What type of charge does a balloon have if it is able to attract to the wall?
Negative
What does it mean is something has a neutral charge?
It has no charge or an equal number of positive and negative charges
True or False, On another planet you would weigh the same that you do on Earth.
False, your weight changes due to the amount of gravity the planet or star has.
What materials make up magnets?
Iron, Nickel, cobalt, and steel
True or False? Only metal objects can become charged.
False
The part of an atom that moves around the nucleus?
electrons
True or False? Gravity decreases with more distance from a planet or star.
True. Gravitational force depends on the mass of the object and your distance from it.
What does a compass do when brought close to a bar magnet?
Points towards the south side and away from the north side
True Or False? Electric forces ar more like magnetic forces than gravitational forces. Explain.
True. Electrical and magnetic forces both attract and repel. Gravity only attracts.
What charge does the top of have storm cloud have?
Positive