Force
_____ is a push or a pull.
What is force?
An invisible force that pulls everything down to Earth’s surface.
What is Gravity?
True or False: On one of Mars's moons, gravity is so weak that you could jump and achieve enough velocity to never land back on the surface.
True
Name 2 things magnets are attracted to.
A push or pull is what describes this.
What is the definition of force.
A ____ is something you want to lift or move.
a. load
b. car
c. weight
What is a load?
A push or a pull that makes objects (things) move; it can be strong or weak.
What is Force?
True or False: Gravity plays no part in the formation of "black holes".
False
Explain what would happen if the N end of a magnet was brought near the N end of another magnet?
What is they would push apart or repel?
The amount of matter in an object?
a. newton
b. mass
c. grams
What is mass?
A ___ machine has a few moving parts.
a. difficult
b. simple
What is simple?
When two equal forces act in opposite directions the result is that the forces are balanced and there is no motion.
a. balanced force
b. unbalanced force
What is balanced force?
How do balanced and unbalanced forces cause the egg to drop into the water?
When the egg is sitting on top of the toilet paper tube, the forces acting upon it are balanced. The tube is pushing it up, and gravity is pulling it down. When the tube is quickly removed, the only force acting on the egg is gravity, which causes its motion downward into the cup of water.
When you jump up, you do come back down. Explain why this happens.
What is gravity pulls you down?
The type of friction that allows planes and birds to fly is what?
What is fluid friction?
When objects _____, they are drawn to each other.
What is attract?
The process of moving or changing position
What is motion?
What has to happen in a game of tug of war for the forces to be balanced
Both sides need to be pulling with the same amount of force in opposite directions for the forces to be balanced.
Astronauts on the moon seem to bounce when they walk. Explain why this happens.
What is the moon has less gravity to pull them down?
The object in space that sucks all of the gravity around it into itself, including light, is what?
What is a black hole?
An unbalanced force will cause an object to ______?
What is accelerate or move?
When one force is stronger than the other the result is motion.
What is unbalanced force?
____ is the force that keeps the planets in an orbit around the sun.
What is gravity?
If you rub a balloon on your head, your hair will stand up. Explain what has happened. (Think about what kind of electricity you have created)
What is you have created static electricity.
Who was the scientist who came up with the law of universal gravitation?