There are three ways in which heat energy is transferred or transmitted from one object to another. These three ways are called conduction, convection and radiation
Radiation is the transfer of heat energy in waves without particles, it is very efficient. Radiation doesn't involve particles and so it happens with all states of matter.
Why is it so hot? I am so burned!!
I am hot but not that hot because light colours reflect on the sun and I am wearing a light coloured shirt which helps me when I am in the sun.
It is hot because radiation is happening to us! The waves of the sun is causing us to become burned. Radiation travels in waves and it does not need particles. It is one of the three ways of which heat is transferred.
I am really hot because the sun waves absorb dark colours and I am wearing a dark coloured shirt.
Also, liquids and gases do not transfer heat quickly or efficiently because the particles are so far apart that they are hard to reach by direct collisions. Another name for liquids and gases are fluids.
Convection is the transfer of heat in liquids and gases. It happens by particles moving in circles, up across and down.
There is a convection current. Part a) A candle heats the air and if the energized air particles move faster and spread apart. Part b) hot air rises. Part c) the air cools as it drifts away from the heat source. d) cool air sinks. e) the cooler air drifts back toward the heat and the cycle repeats.
Convection is happening to us right now! Convection happens in fluids and the particles are far apart and cannot collide, so they move in circles.
Conduction is the transfer of heat energy in solids. It happens through direct collisions of particles.
we don't want to lose our insulator if we want to stay warm and cozy.
I am nice and warm because I am conducting heat in my sleeping bag.
The heat from our bodies are being transmitted to our sleeping bags, making us feel warm.
There are different types of heat conductors and heat insulators
My glove is a good insulator but it is not such a good heat conductor.
My pot is cooking really fast!
When heat energy is transferred by radiation, three things will happen. Dark colours will absorb the heat (absorption). Light colours will reflect the heat (reflection). Clear objects like windows will let the heat pass through (transmission)
No I won't!! I am fine.
Yes, conduction happens in solids and your sleeping bag is a solid.
This is because your pot is made out of silver and silver is a type of metal that is a good heat conductor.