Systems
A system where matter is able to enter or leave
open system
I am the variable you change in an experiment
independent variable
Molecules with more thermal energy move.....
quickly
What happens to light when it comes in contact with black, dull surfaces?
gets absorbed
What does insulation do?
blocks heat transfer
A system where matter does not enter or leave
closed system
I am the variable that changes because if the independent variable
dependent variable
Molecules with less thermal energy move.....
slowly
What happens to light when it comes in contact with opaque, shiny surfaces?
gets reflected
Foil is a good insulator. True or false?
False
A system is a group of structures working together to perform a _________
function or job
I stay the same throughout the experiment
control variable
Gas contains molecules moving quickly. Ture of False?
true
What happens when light comes in contact with transparent glass?
gets transmitted AND reflected
Why do insulators block heat transfer?
Fewer molecules to pass it along
This can enter and leave any type of system
thermal energy or heat
A fair test has this many independent variables
one
Liquid molecules are disconnected from each other. True of false?
False
What happens when light comes in contact with a curved, transparent surface?
gets refracted
How does a lid act as an insulator?
Stops heat leaving through the top of the cup
A bicycle is an example of a system. True or false?
True
A fair test has this many control variables
no limit, lots, multiple
Molecules are moving in a solid. True or False?
true - vibrating
What type of light is heat?
Infrared
Which insulator is the best?
Vacuum - there is nothing there at all