The four inner planets (Mercury, Venus, Earth, Mars) are collectively known by this name.
Terrestrial Planets
These organisms, usually plants, make their own food through photosynthesis.
Producers or Autotrophs
A relationship where both organisms benefit, like a bee and a flower.
Mutualism
This law is often called the "Law of Inertia," stating objects at rest stay at rest.
Newton’s First Law
A magician pulls a tablecloth out from under a pile of dishes, and the dishes stay put.
Newton’s 1st Law (Inertia)
The force that keeps planets in orbit around the Sun.
Gravity
A diagram that shows many overlapping food chains in an ecosystem.
Food Web
A relationship where one organism benefits and the other is harmed.
Parasitism
The formula associated with the Second Law, relating force, mass, and acceleration.
F = ma
A climber pulls down on a rope, and their body moves upward.
Newton’s 3rd Law (Action/Reaction)
This planet is known as the "Red Planet" due to iron oxide on its surface.
Mars
This term describes all the living (biotic) and non-living (abiotic) factors in an area.
Ecosystem
A relationship where one organism benefits and the other is neither helped nor harmed.
Commensalism
This law states that for every action, there is an equal and opposite reaction.
Newton’s Third Law
It takes much more force to push a semi-truck than it does to push a small golf cart.
Newton’s 2nd Law (F = ma)
The spinning of a planet on its axis, which causes day and night.
Rotation
In an energy pyramid, only this percentage of energy is passed from one level to the next.
10%
Barnacles attaching to a whale to catch more food without hurting the whale is an example of this.
Commensalism
This property of matter resists changes in motion and is directly related to an object's mass.
Inertia
A person is riding in a car that stops suddenly; the person’s body continues to move forward into the seatbelt.
Newton’s 1st Law (Inertia)
The theory that the solar system formed from a rotating cloud of dust and gas.
Nebular Hypothesis
The process by which an ecosystem changes over time, such as a forest growing back after a fire.
Ecological Succession
This term describes an organism that a parasite lives on or in.
Host
If you double the mass of an object but want to keep the acceleration the same, you must do this to the force.
Double it
A rocket engine pushes exhaust gases downward, causing the rocket to accelerate into the sky.
Newton’s 3rd Law (Action/Reaction)