Cups
What was the key feature of our cup system that helped to maintain the temperature of the liquid in the cup?
Double wall
Independent variable
What is the smallest particle of water called?
Molecule
Open system
Can light transfer energy into a system?
Yes
Why does a cup without a lid lose more mass than a cup with a lid?
Matter can easily escape through the top of the cup when it evaporates.
A factor or condition that might change (the thing that is measured).
Dependent variable
What happens to a glass of water over time if you leave it out at room temperature?
The water particles will evaporate out of the glass.
When matter cannot enter or exit a system.
Closed system
Light can be transmitted, _____________, and ____________.
reflected and absorbed
When the temperature of matter in one system decreases, the temperature of matter in the neighboring system ___________________.
increases
A factor or condition that does not change.
Controlled variable
Particles of matter that move around fastest and are the most spread apart.
Gas
What kind of system is a cup with a sealed lid and no hole?
Closed system.
What is absorption?
When light transfers energy directly into a particle of matter.
Is more energy transferred between two systems when the difference in temperature is greater or smaller?
Greater
The speed at which water particles move is directly related to:
temperature
Particles of matter that move and are loosely packed together.
Liquid
What kind of system is a cup with a lid and straw hole?
Open system
Can temperature changes occur when there is no light?
Yes
In cold water, water particles move
slow
The energy an object has because of its movement.
Particles of matter that are tightly packed together and do not move.
Solid
Why does a closed system do a better job of maintaining the temperature of a closed system than an open system?
Heat always transfers from _________ to _________.
Hot to cold