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# 1st semester vocab

What is the big bang? Everything was created from a point is space.
What is the Doppler affect? The red shift and blue shift.
What is a comet? A comet is a ball of ice with a tail shooting through space.
What is the name of our universe? The solar system.
What is in the milky way? Alot of stars clumped up together.
How do u find density? Calculate the mass and volume of the object divide them and you have density. D=M/V
What is a gradulated cylinder used for? Measuring liquids and finding volume.
What should you do when you are done with a lab? clean up.
What do you do before a lab? listen to the teacher and don't touch the equipment?
Can you eat during a lab? No
What is a chemical change? A change in what it was to something different.
What is a physical change? A change in appearance.
What is the charge of an electron? Negative
What is the charge of a proton? Positive
What is the charge of a neutron? No charge or neutral.
What is a balanced force? When 2 forces are equal.
What is an unbalanced force? When 2 forces are not equal.
What is newtons first law? If an object experiences no net force, then its velocity is constant: the object is either at rest (if its velocity is zero), or it moves in a straight line with constant speed (if its velocity is nonzero).
What is newtons second law? The acceleration a of a body is parallel and directly proportional to the net force F acting on the body, is in the direction of the net force, and is inversely proportional to the mass m of the body, i.e., F = ma.
What is newtons third law? When a first body exerts a force F1 on a second body, the second body simultaneously exerts a force F2 = −F1 on the first body. This means that F1 and F2 are equal in magnitude and opposite in direction.
Created by: b0404058
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