Heat and Temperature Definitions
This is a measure of the average kinetic energy of all the particles within an object
temperature
As kinetic energy increases, temperature _________.
Increases
This is the S/I unit for work
Joule
What is the S/I unit for power?
Watts
Why do roses look red?
All colors except red are absorbed. Red is reflected.
the total energy of particles in a substance (kinetic plus potential)
thermal energy
Why do some substances heat up and cool down faster than others?
Different substances have different thermal capacities (specific heat capacity)
When is work done?
A force causes an object to move in the same direction as the force
How is power calculated?
Work / time
This type of wave has the lowest frequency
Radio waves
thermal energy transferred from one object to another due to a temperature difference
heat
Why is Europe warmer than Canada although at the same latitude?
The gulf stream warms runs north and warms Europe
force x distance
Do the work faster
These waves have the shortest wavelength
Gamma rays
The substances allow heat to travel quickly through the material
Conductor
Where are temperatures typically more stable?
When work is done, what is transferred to another object?
energy
This is the quantity that measures how much a machine multiplies force.
Mechanical advantage
This type of lens bends light inward to a foal point. Beyond that point the image is inverted.
Convex lens
The transfer of heat by electromagnetic waves
Radiation
aging, buildings deteriorating, hot things cool down
How much work is done when someone walks 10 miles while holding up a backpack?
0 J
On a rollercoaster, this is where the most potential energy is located.
At the top of the highest hill
Objects in outer space moving toward the earth look ________.
Blue