Matter
What are the two properties of matter?
Mass and volume
What do we call the energy that is converted by wind turbines?
Wind energy
What are the different ways of transferring heat?
convection, conduction, radiation
What type of heat transfer is sitting close to a bonfire?
Radiation
How do humans get energy?
Humans get energy from food.
What are the chemical processes that can change matter?
Burning, cooking, rusting, rotting
Why is renewable energy good for the environment?
It is good for the environment because it regenerates quickly and naturally. They produce clean energy that does not pollute the environment.
Conduction is when heat is transferred by the movement of air or gases.
No, this process is called convection.
Give 3 examples of renewable energy.
Solar, Hydropower, Biomass, Geothermal, Wind Energy
What do we call the physical process of solids turning into liquids?
Melting
What is matter?
Matter is everywhere! It is things like air, rocks, wood, and water. Matter is anything that can be weighed and occupies space.
What are the different forms of energy?
Light and Thermal Energy
Electrical Energy
Mechanical Energy
Chemical Energy
What do conductors do to heat?
They transfer it to something else.
What are the two types of mixtures?
Homogeneous and Heterogeneous
Gas touching a cooler surface and turning into liquid is a physical process called...
Condensation
What are the physical processes of changes in matter?
What form of energy source is a water current?
Mechanical energy
What is the difference between insulator and conductor?
Conductors transfer heat and insulators stop the transfer of heat.
A substance composed of various elements that can be separated by chemical methods is called...
A compound
What are the different forms of energy?
Light and thermal energy, electrical energy, mechanical energy, and chemical energy
What is the difference between pure substances and mixtures?
Pure substances cannot be separated into other substances by physical methods.
What type of energy do we get from storm clouds and batteries?
We get eletrical energy from storm clouds and batteries.
What occurs when solid, liquid, or gases are heated?
Thermal expansion (dilation).
What is the difference between homogeneous and heterogeneous mixtures?
Homogeneous: all substances are distributed evenly in the mixture.
Heterogeneous: the substances are not distributed equally.
Heat is transferred by __________ waves. (Radiation)
Electromagnetic