The layer of the Earth at the center (the hottest layer made of solid iron).
What is the inner core?
100
Fossilized natural materials that include nests, burrows, footprints, etc. (trace, cast, or mold).
What are trace fossils?
100
A force that starts a change in motion (is stronger in one direction than another, making the object move).
What is an unbalanced force?
100
Small molecules duplicated and linked together (think about slime, rubber balls, and a certain Lemur).
What is polymer?
200
The layer between the outer core and the crust (where convection currents occur).
What is the mantle?
200
An impression of something that is fossilized (an example of the original object could be made by pouring cement into it)
(trace, cast, or mold).
What are mold fossils?
200
The law of inertia: an object in motion stays in motion, and an object at rest stays at rest, until acted upon by an external force.
What is Newton's First Law?
200
When one kind of energy is changed to another kind.
What is an energy transformation?
300
The term for all the water on Earth's surface (biosphere, hydrosphere, or atmosphere).
What is the hydrosphere?
300
The time period we currently live in (from 0 to 65 million years ago) (Cenozoic, Mesozoic, or Precambrian).
What is the Cenozoic era?
300
The law that states that the amount of Force = Mass x acceleration.
What is Newton's Second Law?
300
When one kind of energy stays the same as it is just moved from one object to another.
What is energy transfer?
400
The pieces in the Earth's crust that move due to convection inside the Earth.
What are tectonic plates?
400
If magma (from inside the earth) is cooled, it becomes this type of rocks.
What are igneous rocks?
400
The time period prior to our current one (from 65 to 250 million years ago) (Cenozoic, Mesozoic, or Precambrian).
What is the Mesozoic era?
400
The law that finds that for every action, there is an equal and opposite reaction.
What is Newton's Third Law?
400
A renewable energy resource collected in panels and used to power homes, businesses, etc.
What is solar energy?
500
The natural disaster caused when the pieces inside the Earth's crust pull away from each other, allowing magma to break through the surface (becoming lava).
What is a volcano?
500
Wind and water wear down rocks through this process, moving them from one place to another (erosion or weathering).
What is erosion?
500
The oldest time period (from about 550 to 3800 million years ago) (Cenozoic, Mesozoic, or Precambrian).
What is the Precambrian era?
500
Electrical, gravitational, and magnetic forces are examples of which; contact or noncontact forces?
What are noncontact forces?
500
A kind of potential energy stored in the bonds between atoms and molecules in a substance.