Heat Basics
What is the transfer of thermal energy between objects called?
What is heat?
Which type of heat transfer happens when particles touch directly?
What is conduction?
When you touch a metal spoon left in hot soup, it feels hot. Which type of heat transfer?
What is conduction?
Radiation travels in what form?
What is Waves or electromagnetic waves?
What type of heat transfer heats food in a microwave?
What is Radiation? Microwaves are a form of electromagnetic radiation
Heat always flows from _____ to _____.
What is hot to cold?
Which type of heat transfer moves through fluids (liquids or gases)?
What is convection?
Warm air rising near a heater in a room is what type of heat transfer?
What is convection?
What is the main source of radiation on Earth?
Why are ovens lined with metal?
Metal conducts and reflects heat efficiently
What are the three main types of heat transfer?
What is radiation, conduction and convection?
Which type of heat transfer can travel through empty space?
What is radiation?
Heat from a campfire warming your hands without touching the flame is what type?
What is Radiation?
Give two real-life examples of radiation.
Sun warming your face, heat from a fire, heat lamps, microwave oven, etc.
Why do refrigerators have fans inside them?
To circulate air by convection and keep temperature even
The total energy of all particles in a substance is called _____.
What is kinetic energy?
DOUBLE JEOPARDY! In which type of heat transfer do warmer fluids rise and cooler fluids sink?
What is convection currents?
Why does wearing black/dark clothes on a sunny day feel hotter than wearing white?
Dark colors absorbs more radiation.
True or False: You can feel radiation without touching the heat source.
What is true?
Why does a thermos keep drinks hot or cold?
It has insulation that prevents conduction, convection, and radiation
DOUBLE JEOPARDY!
What is the difference between temperature and heat?
Temperature measures average kinetic energy; heat is energy transfer.
Give one example of each type of heat transfer.
Conduction = touching a hot pan; Convection = boiling water; Radiation = feeling the Sun’s heat.
Which pan bakes brownies faster: metal or glass? Why?
Metal, because it is a conductor.
DOUBLE JEOPARDY: Why can you still feel the Sun’s heat on your face even though space between the Sun and Earth is a vacuum?
Because radiation travels as electromagnetic waves and does not need matter to transfer energy
In our brownie lab, which brownies took longer to bake?
What is glass?