Matter
What is Matter?
Anything that has mass and takes up space.
Which has more thermal energy? A cup of hot tea or an iceberg? Why?
An iceberg. It contains more heat because it's bigger.
What are conductors?
a material that easily allows the flow of heat
What are the 3 types of heat transfer?
Conduction, Convection, Radiation
Thermal conductors such as auminium, copper, steel and iron transfer thermal energy very quickly, is this true or false?
true
What is Heat Transfer?
Thermal Energy exchanges between objects of different temperatures
Thermal energy always moves from objects with _______ temperatures to objects with ________ temperatures.
Higher
Lower
Insulators _______ thermal energy transfer.
Minimize
The transfer of energy by the movement of electromagnetic waves.
Radiation.
True or False: The transfer of energy drives the movement of matter within a system and between systems.
True
True or False: Energy and matter can be created and destroyed.
False. Energy and matter cannot be created or destroyed.
Define Thermal Equilibrium.
Transfer (heat flow) that continues until temperature is all the same.
If two objects have different temperatures, in which direction will heat move? For how long?
From warm to cold until both temperatures have leveled out.
Can only happen in liquid and gases. Heat transfer that is caused by the rising of hotter, less dense fluids and the falling of cooler denser fluids.
Convection
Define heat transfer
The movement of heat energy from one material to another.
the energy of motion is known as
kinetic energy
Define Thermal Energy.
The total kinetic energy of tiny particles that make up matter.
Define Temperature.
The degree or intensity of heat present in a substance or object.
The transfer of thermal energy that occurs in solids, liquids, and gases when 2 substances of different temperatures touch.
Conduction.
Imagine you are setting up an experiment to see what type of spoon melts butter the fastest. You get three of the same sized spoons made of three different materials, put 1 teaspoon of butter on each, set each on a hotplate at 200 degrees F, and start your timer. The variable in this experiment is the
the spoon material
Q: What do we call the total energy of motion of the tiny particles in matter?
A: What is thermal energy?
Q: Metals like copper, aluminum, and steel are all examples of _________.
A: What are conductors?
Q: What do we call the movement of thermal energy from a warmer object to a cooler one?
A: What is heat?
Q: What kind of material does not conduct heat well?
A: What is an insulator?
Q: What scale do people in the U.S. usually use to measure temperature?
A: What is Fahrenheit?