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Physical Science
Chemistry
Diversity of Life
Earth History
Miscellaneous
100
This force causes a ship's iron anchor to sink to the ocean floor when it is released overboard.
What is gravity
100
A fundamental substance that cannot be broken into simpler substances by chemical or physical processes.
What is an element?
100
An individual living thing, such as a plant, animal, fungus, bacterium, or protist.
What is an organism?
100
A rock made from particles, such as sand, silt, and pebbles, or by precipitation of minerals from a solution, such as calcium carbonate.
What is a sedimentary rock?
100
A rock that has changed from another rock because of heat, pressure, or a chemical reaction.
What is a metamorphic rock?
200
Change of velocity per unit of time.
What is acceleration?
200
A solution with a large amount of solute dissolved in a small amount of solvent.
What is "concentrated?"
200
The process by which plants, and some protists and bacteria use light energy, carbon dioxide, and water to make sugar.
What is photosynthesis?
200
The breaking apart of rocks by physical or chemical methods.
What is weathering?
200
Rock formed from molten or partially molten material.
What is an igneous rock?
300
The theoretical constant speed at which an object would have to travel in order to go a given distance in a given period of time. Total distance divided by total time.
What is average speed?
300

A mixture that is evenly mixed throughout is 

homogeneous

300
A primitive kind of cell containing no nucleus or organelles. All prokaryotic cells are organisms called bacteria
What is eukaryotic?
300

Three types of plate boundaries

transform, divergent convergent

300
The imaginary circle around Earth or a celestial object that is everywhere the same distance from the poles.
What is the equator?
400
mass divided by volume =
What is density.
400
A process during which starting substances (reactants) change into new substances (products) with different arrangements of atoms.
What is a chemical reaction?
400

A relationship where one organism benefits and the other is harmed

What is parisitism?

400
The transformation of rocks from one type to another by melting, weathering, erosion, deposition, heat, pressure, or deformation.
What is the rock cycle?
400
The wearing away and transport of soil and rock by weathering, mass wasting, and the action of water, wind, and ice.
What is erosion?
500
The amount of matter in an object, measured in grams (milligrams, kilograms, anything with grams at the end).
What is mass.
500

5 Pieces of evidence of a chemical reaction

formation of a gas, precipitate, light, heat, color change 

500
A semirigid structure that surrounds cells of plants, fungi, and bacteria. Does not exist in animal cells.
What is a cell wall?
500
A nearly level area that has been uplifted.
What is a plateau?
500
A very large cluster of stars (tens of millions to trillions of stars), bound together by gravity.
What is a galaxy?