Unit 1
Did Galileo and Newton live in the same years?
Yes, Galileo died in 1642 and Newton was born in 1642
What is friction?
Friction is a force that resists motion.
Reaction forces happen because of what
Because of the action force.
Galileo and Copernicus both said that ______ was the center of the solar system?
Sun
Earth rotates completely in how many hours
24
Robert Hooke was most famous for his use of what?
He was most famous for his use of the microscope and the discovery of cells
contact force acts through what?
touch.
Magnetic force is a result of what force
Electromagnetic force.
Who also believed in the Sun-Centric model?
Johannes Kepler.
when does a full moon occur.
When the moon is on the opposite side of the earth to the sun.
If a car has positive velocity and acceleration the car is?
moving forward and speeding up.
What is newtons first law of motion.
An object at rest remains at rest, and an object in motion remains in motion at a constant velocity, unless acted upon by an unbalanced force.
What kind of wave is light?
Electromagnetic wave.
What was one problem that the moon program had.
Each rocket could only be used once.
When does a solar eclipse occur?
When the moon moves in between the sun and the earth.
How do you find the speed of something?
Divide distance by time.
An example of Field force would be?
A magnet
The force applied by an electric field on a charged object is called?
Electric force.
What is mass?
The quantity of matter in an object.
When does a lunar eclipse occur.
When the earth is lined up in between the sun and moon
Who was the son of a famous musician?
Galileo
What is inertia affected by?
Inertia is affected by the object's mass.
What happens when a light wave strikes an object that is not transparent.
some of the waves are reflected.
What is a molecule?
A substance that is formed when two or more atoms join.
What is the equator?
An imaginary line that divides the Earth in half.