History of Heat
What were fire pits used for in early human history?
Cooking and heating homes.
This device helps keep your hands safe while using the oven.
What is an oven mitt?
What do we call the transfer of heat through solids?
What is conduction?
What’s the difference between heat and temperature?
Heat is energy transfer; temperature is particle motion.
What’s one natural source of thermal energy?
The Sun (solar radiation).
This ancient process used heat to melt metal for tools and weapons.
What is metallurgy?
What is a daily routine that can affect how much thermal energy you use
Taking long hot showers.
What do radiators and space heaters rely on to warm a room?
What is convection?
What happens to particles when a solid is heated?
They vibrate more and may change state.
Homes that use sunlight through big windows in winter are using this type of solar heating.
What is passive solar heating?
Name a heat-related technology used in ancient pottery making.
What is a kiln?
These appliances help dry your hair and clothes using thermal energy.
What are a hair dryer and a clothes dryer?
This type of heat transfer can happen even in space.
What is radiation?
Which absorbs more radiant heat: black or white surfaces?
What is black?
What household device removes thermal energy to keep food cold?
What is a refrigerator?
In the 1800s, this invention drastically improved home heating.
What is the cast iron stove?
How does a thermostat work with a furnace to heat your home?
It senses temperature and turns the furnace on/off.
What are expansion joints used for in bridges and railway tracks?
To prevent damage from heat expansion.
How does heat affect the volume of most materials?
It makes them expand.
Why do we insulate our homes?
To reduce heat loss and save energy.
This type of engine uses heat to convert fuel into motion and revolutionized transport.
What is the steam engine?
How does a thermocouple work?
A thermocouple is a temperature-measuring device composed of two dissimilar conductors that form electrical junctions at differing temperatures. When there is a temperature difference between the junctions, a voltage is created in the circuit, which can be measured to infer temperature.
This type of thermostat uses two metals to control a circuit.
What is a bimetallic strip?
What model explains how heat affects matter?
What is the particle model of matter?
Give an example of a problem caused by uneven heating.
Cracked sidewalks, damaged roads, or material stress.