What type of heat transfer is this?
Density
Differential Heating of Earth
Particles and Heat
--- Challenge ---
(these won't be on the quiz...)
(these won't be on the quiz...)
100
You touch a hot stove with your hand. Ouch!
Conduction
100
Which is more dense: a pound of bricks or a pound of feathers?
A pound of bricks (although it weighs the same as a pound of feathers)
100
No
100
Fluids include which two states of matter?
Liquids and gases
100
Does this show summer or winter in the northern hemisphere?
Summer
200
You notice a "rolling boil" in your pot of water when cooking.
Convection
200
How do you calculate density?
Mass / Volume `M/V`
200
Which heats faster: land or water?
Land
200
Which one of these shows the flow of a convection current when heated from below?
D
200
How does a hot air balloon fly?
It warms the air in the balloon which makes it less dense than the air around it. This causes it to rise.
300
A microwave
Radiation
300
How does adding salt to water affect its density?
Adding salt increases the density of water.
300
Which cools slower: land or water?
water
300
What two things happen to particles in a fluid when it loses thermal energy?
The particles slow down and move closer together.
300
What is the density of fresh water?
1 g/ml
400
Greenhouse gases heat up from this type of heat transfer.
Radiation
400
A glass of saltwater has a mass of 3.6 g and a volume of 3.2 ml. What is its density?
1.125 g/ml
400
Students heated soil and water under a heat lamp and collected this data. When was the heat lamp turned off in this experiment?
at 15 minutes
400
Is this a solid, liquid, or gas?
liquid
400
What are the two ways to increase the density of a substance?
By adding more particles and by decreasing the temperature
500
A metal rod slowly heats up from one end to the next:
conduction
500
A gold bar has a volume of 4.5cm3 and a mass of 82.35g. What is its density?
18.3 g/cm3
500
Living near the ocean makes for ________ winters and ________ summers.
warmer winters and cooler summers
500
Why does tile floor feel colder than a carpet when each are the same temperature?
Tile conducts heat better than carpet.
500
What was the first day for students in the Ellen Garrison building?
February 24, 2025