Category 1
This is all individuals of the same species.
What is population?
This is the trapping of heat by greenhouse gases.
What is the greenhouse effect?
This is when an animal is at risk of becoming extinct.
What is endangered?
This is how humans negatively impact the environment.
What is pollution?
This is anything that takes up space and has mass.
What is matter?
These are the 3 major sources of energy.
What are solar, geothermal and nuclear?
This is what matter is made of.
What are atoms?
This is the change of a liquid to a solid.
What is freezing?
This the change of solid to a liquid.
What is melting?
This is the change of gas to a liquid.
What is condensation?
This is the change of liquid to a gas.
This is the change in an object's size and/or shape, and does not change the chemical makeup of a substance.
What is physical change?
This is positively charged.
What is a proton?
These are subatomic particles found in the nucleus.
What are protons and neutrons?
This is a type of atom with the same number of protons.
This is the number of protons found in an element.
What is the atomic number?
This is what the force of friction depends on.
What is the smoothness of the surface?
This is created when 2 objects pull on a rope, string, wire or cable in opposite directions.
What is tension?
This is a push or pull.
What is force?
This is what force is measured in.
What are newtons?
This is Newton's 1st law.
What is an object will stay at rest and an object in motion will stay in motion unless acted on by unbalanced forces?
This is Newton's 2nd law.
What is an object accelerates when a force acts on an object with mass?
This is Newton's 3rd law.
What is for every action there is an equal and opposite reaction?
These are balanced forces.
These are unbalanced forces.
What are forces acting on an object that are not equal and balanced?