Unit 6
What is scientific notation?
It is used for very big and very small numbers.
What is Newton’s first law of motion?
Inertia
What is work?
A quantity that measures the effect of a force acting over a distance.
What are waves?
Waves are a disturbance that transfers energy.
What is a calorie?
The amount of heat needed to raise the temp of water 1 degree Celsius
What is distance?
Distance is a scalar quantity which refers to “how much ground an object has covered” during its motion.
Sally sits on a rock. Her weight is an action force. Describe its reaction force”
The rock pushes back on her with equal force.
What is joule?
Metric unit used to measure work.
The higher the frequency the higher the ?
Pitch
What is a thermometer?
A device that utilizes expandable liquids to determine temp.
What is free fall?
An object is in free fall if gravity is the only object acting on it.
What is Newtons 3rd law?
For every action force there is an equal and opposite reaction force.
What is energy?
The ability to do work.
As you move from left to right on the spectrum, does the wavelength increase or decrease?
It decreases
What is temperature?
Measures average kinetic energy of the molecules in an object or a substance.
How many significant figures are in 700?
1
What is harder to stop, a bowling ball or a soccer ball? And why?
A bowling ball because it has greater momentum.
What is potential energy?
The stored energy resulting from the relative positions of objects in a system.
Reflected images off of a flat mirror look like:
Upright + same size as originals
What is celcius?
A temperature scale that uses pure water as the basis.
What is 25000 is scientific notation?
2.5 x 10 to the 4th power
What is friction?
A force that resists motion between two surfaces that are touching each other.
What is the equation for velocity?
mgh=1/2mv squared
Reflected images off of a convex mirror look like:
Virtual + diminished
What is Fahrenheit?
A temperature scale that was set using many different values.