Earth's Atmosphere
How can there be clouds in winter when it is too cold for water to stay a vapor?
They can just exist as ice crystals.
How is Heat Transferred?
Heat can flow from one place to another in many ways. The following are many heat transfer modes: Conduction,Covection,and Radiation.
Define Conduction
The process of transmission of energy from one particle of the medium to another with the particles being in direct contact with each other.
Define Convection
The movement of particles through a substance, transporting their heat energy from hotter areas to cooler areas.
What is the simple definition of radiation?
The simple definition of radiation is energy that moves in the form of waves or particles.
How do plants get their nitrogen from the air?
Plants get the nitrogen that they need from the soil, where it has already been fixed by bacteria and archaea.
What is Convection of Heat?
Heat is transferred from a higher temperature region to a lower temperature region in liquids and gases during this process. Convection can also heat transfer occurs partly due to molecular movement and partly as a result of mass transfer. Ex:Heating of milk in a pan.
What is the definition of conduction?
The transfer of energy, such as heat or an electric charge, through a substance
What is the definition of convection?
motion in a gas or liquid in which the warmer portions rise and the colder portions sink. also the transfer of heat by this motion.
Give one example of radiation.
One example of radiation is visible light from the sun;
How does a cloud fill up with water?
When the invisible water vapor in the air condenses into visible water droplets or ice crystals.
Name the general mode of heat transfer in
a) Solids
b) Liquids and gases
A) The general mode of heat transfer in solids is conduction. B) The general mode of heat transfer in liquids and gases is convection.
What is an example for Conduction?
Touching a hot seatbelt when you get into a car.
Give one example of Convection.
Melting blue ice cubes in water or observing food coloring in heated water.
When boiling a pot of noodles explain where radiation takes place.
When boiling a pot of noodles, radiation primarily occurs from the heat source itself, like the stove burner, to the bottom of the pot.
What makes meteorites so hot that you can't touch them?
they have just come from deep space, which is cold.
Explain how boiling a pot of water on the stove can be an example of convection and conduction.
The pot touching the stove is an example of heat being transferred through touch conduction but the water inside the pot being heated is an example of convection because the hot water rises and pushes the cooler water down to be warmed up.
Explain conduction.
Conduction is when heat moves from one object to another object through direct touch.
Explain convection.
Convection is a way in which heat travels.
True or false: radiation needs air to take place.
False
How do trees give earth all its oxygen?
As a by-product of that chemical reaction oxygen is produced and released by the tree.
When two objects are touching what type of heat transfer can occur?
Conduction
What medium does conduction need to take place?
Conduction does not require material medium for the transfer of energy.
Where can you find convection currents in your house?
when warm air rises towards the ceiling.
What medium does radiation need to take place?
The radiation heat transfer occurs in solids as well as in liquids and gases.