Conduction
How do the molecules transfer heat?
By bumping and colliding with other molecules
Why do cold fluids sink and hot fluids float. (Include a model for molecules)
Hot fluids are less dense, and cold fluids are more dense.
+ 100 points for complete molecules model
What is a vacuum space?
A space where matter is not present?
What is boiling point?
The temperature at which a substance changes from a liquid to gas.
What is the formula for density?
Where does conduction happen?
Conduction happens in solids, liquids, and gases.
How does heat move through fluids?
Convection transfers heat in fluids. The hot fluids moves up to the colder area, so it brings heat with it from the hot area to the cold area.
What can it happen in?
Solids, liquids, and gases
Melting point?
The temperature at which a substance changes from solid to liquid
What is the smallest to biggest units of Life?
Organism, Organ, Cells, Oraganelles, Molecules of Life, Atoms
What is Conduction?
Conduction is when heat moves through an object from the hotter part to the colder part of an object. Heat makes the molecules move faster. It happens when the molesciles transfer energy by colliding with each other.
What is Convection?
It's how heat transfers in fluids
(gasses and liquids) + 100 points if written
What is Radiation?
The transfer of electromagnetic energy through the sun and space(also through a vacuum space).
What is Heat?
The energy caused by molecules moving fast and spreading further apart.
Define an Element and a Compound.
Element- a band of molecule(s) that's made of one substance
Compound- a molecule with multiple substances
How does the heat move through the objects?
From the hotter part of the objectn to the colder part of the object
Why do fluids mix when a hot fluid is at the bottom and a cold fluid is at the top?
Hot fluids float -because they're less dense- and cold fluids sink- because they're more dense- , so they mix up trying to get to there right places.
What waves does radiation travel through?
electromagnetic
Thermal Contraction?
When heat is taken away from a substance, the molecules slow down and come together
How does height impact potential energy?
The higher the height, the more potential energy the object has.
What happens to the molecules during conduction?
The molecules start to speed up in the colder object and slow down in the hotter one.
Whats the convection cycle?
1. fluid is heated/ becomes less dense starts floating upward
2. fluid goes out
3. fluid is losing heat / becoming more dense/ sinks down
4. fluid is drawn back to the same spot( where the heat source is)
What does radiation not need?
-Matter(happens in conduction/ convection)
-Moloecules don't have to bump into each other(conduction)
(OPTIONAL)
-The sun(only another heat source other than the sun)+ 200 bonus points
Thermal Expandsion
When a substance is heated, the molecules move faster, and further apart
Include examples Conduction, convection, and radiation.
Conduction- a metal spoon heating up in hot soup, ironing clothes, melting chocolate in your hand, or touching a hot stovetop
Convection-boiling water
Radiation-microwave oven