Unit 1
Who is known as the first natural philosopher?
Thales.
What is friction?
Friction- a force that exists between a surface that acts to resist motion.
What is Newton's third law?
Every action force has an equal & opposite reaction force.
Who is credited with the theory of the atom?
Leucippus and his student Democritus.
The word element was first used by ____________.
Which discovery is Einstein known for?
He is best known for the theory of relativity.
What concept is in all three of Newton's laws?
Force.
Magnetism was first discovered using ___________.
Lodestones.
The word atom originates from a Greek word meaning..?
Meaning cannot be made smaller.
What two things is a hydrogen molecule made out of?
Two hydrogen atoms.
Define displacement.
Displacement- the direction and distance an object changes position from one point to another.
What is a push or pull that happens when two objects interact?
A force.
What does a gravity field apply on?
On anything with mass.
What is Alchemy?
Alchemy is the ancient practice that attempted to change matter.
Why is a molecule important?
Because it's bonds are very strong and take up a lot of energy to break apart.
What is the formula for calculating speed?
v=d/t
The ozone molecule is made up of how many oxygen atoms?
Three.