Fundamentals
True or False: One of the reasons the SI system is so easy to work with is that it is a base 10 system, regardless of what unit is being measured and calculated
True
The ancient scientist discovered the principle that the buoyant force water exerts on an object is the same as the weight of the water displaced by the object, and therefore it is named after him.
Archimedes Principle
An object at rest will stat at rest or if in motion, will continue to move t a contact velocity, unless the object is acted upon by an external force
What is Newton's first Law of motion
List the two types of waves
Mechanical and electromagnetic
Light includes what type of wave
electromagnet
Write this number in scientific notation
602,000,000,000
6.02 x 1011
The upward force that a liquid exerts on objects immersed or submerged in liquid is called.
Buoyant Force
The acceleration of the n object is directly proportional to the force acting upon it nd inversely proportional to the mass of the object
Newtons 2nd Law of Motion
Time is n important element of waves because one of the measurable properties of wave is how many wave peaks occur per second, which is called...
Frequency
What happens when light enters a prism
The light waves slows as it enters a solid which is why we can see the colors of light in a prism
Measurement tools that collect data so they can be reported with values (rulers, scales, stop watches) provide what type of data?
What is quantitative or objective data?
Density is calculated using what equation?
density = mass/volume
The sum of all forces acting upon an object and the object isn't in motion is called
Static equilibrium.
The range of frequencies that can be herd by humans is called..
Audible range
All light is absorbed and there are no waves reflected
Black
Question #9 pg 26
control group = ball bearing system in the lab
Experimental group - Ball bearing system under water
The relationship between force and solid matter in which matter stretches or compresses in proportion to the force applied
What is Hooke's Law
Draw and label a wave
see page 208
The molecules speed up (vibrate) and and break free turning the liquid into gas.
When pressure is applied to a gas the what happens to the density?
Increases
If all of these conditions are met it would be called...
1) The two forces must act on different objects
2) The 2 forces must be in opposite directions
The two forces must be the same type (contact verse non contact)
3rd Law Force Pairs
Described how we hear..
Sounds entered the ear (vibrations from waves)
The waves travel down the ear canal nd strike the ear drum
Electrical signal sent to the brain
This part of the eye re cells that give us color vision and there are about 6 million of them in the retina.
Cones