Gas Laws
A balloon is left in a freezer overnight and this happens
What is the balloon's volume decreases?
Heat transfer through direct contact.
What is conduction?
Why does water warm more slowly than sand?
What is water has a higher specific heat?
Q = mcΔT
What does "m" represent?
What is mass?
A toaster converts electrical energy into ______ energy.
What is thermal energy?
A sealed spray can is left near a fire and this happens
What is pressure increases?
Heat transfer by movement of fluids.
What is convection?
A substance with a high specific heat requires ______ energy to change temperature.
What is more energy?
Q = mcΔT
What does "c" represent?
What is specific heat?
A heat lamp converts electrical energy into ______ and ______ energy.
What are light and thermal energy?
Which gas law describes the relationship between temperature and volume?
What is Charles's Law?
Heat transfer that can travel through space.
What is radiation?
Which will experience a smaller temperature change when equal energy is added: a substance with high specific heat or low specific heat?
What is high specific heat?
Q = mcΔT
What does ΔT represent?
What is change in temperature?
Water turns a turbine that produces electricity. The turbine is converting ______ energy into electrical energy.
What is mechanical energy?
A marshmallow is placed in a sealed syringe and the plunger is pushed inward. What happens and why?
What is the marshmallow shrinks because pressure increases?
When water is heated from the bottom, the warmer water rises because the particles:
A. Move slower
B. Stop moving
C. Gain energy and spread farther apart
D. Become heavier
What is gain energy and spread farther apart?
Material A has a specific heat of 900 J/kg°C. Material B has a specific heat of 400 J/kg°C. Which would be a better insulator?
What is Material A?
Q = mcΔT
m = 10 g
c = 4 J/g°C
ΔT = 5°C
What is 200 J?
The final energy form produced by a heater is:
What is thermal energy?
A gas in a rigid container is heated. Pressure increases. Which gas law is demonstrated?
What is Gay-Lussac's Law?
A metal spoon is left in hot soup. The handle becomes warm because thermal energy moves through the spoon as:
What is faster-moving particles collide with neighboring particles?
A cup of water and a cup of sand absorb the same amount of energy. The sand gets much hotter. What does this tell us about water?
What is water has a higher specific heat?
Specific heat = 1.0 J/g°C
Mass = 20 g
ΔT = 20°C
Calculate Q.
What is 400 J?
A hydroelectric system uses falling water to generate electricity which powers a heater. Name the sequence of energy transformations.
What is mechanical → electrical → thermal?