ACT Science Vocab

The force of Earth's gravity on an object.

The amount needed to raise the temperature of one gram of water 1° C

An agent that speeds up a chemical reaction without itself being altered by the reaction.

Contains all the genetic information for an organism.

Quantities or measurements having the same fixed relationship in degree or number are:

Lowest possible temperature; approximately -273 degrees.

The smallest entity that has distinct chemical properties.

Substance with a pH lower than 7.

The layer of air surrounding earth.

A sample group which serves as a standard for comparison. No variables are tested.

The prefix "homo-" means:

A substance composed of two or more metals.

The vascular tissue that carries blood away from the heart.

Testable explanation of a question or problem.

The process by which plants convert sunlight to convert CO2 and H20 into glucose.

Area of an ecosystem where an organism lives.

An observation that includes characteristics of measurements or amounts.

An observable fact or event.

Substance that speeds up a chemical reaction by reducing amount of activation energy needed.

Cancer causing agent.

A final decision based on facts, experience, or reasoning.

Following accepted rules of behavior

An object in 2D motion that has vertical acceleration but no horizontal acceleration.

The measurement of the closeness of measurements obtained from two or more experimental runs.

A particle of light.

The prefix "hetero-" means:

Material that allows heat or electricity to flow through with minimal resistance.

A substance consisting of exactly one type of atom.

A large mass of snow-covered ice.

The energy of an object in motion.

A substance that blocks the flow of heat or electricity.

The emission of energy from an atom's nucleus.

A chemical that is considered to be the "fuel" or energy source for an organism.

The sum of forces in the radial direction; directed toward center of the circular motion.

A molecule or atom that has become charged by gaining or losing electrons.

A unit of measure for the relative intensity of sounds.

The number of cycles per unit time of a repeating phenomenon.

The magnitude of velocity.

Instrument which measures atmospheric pressure.

Subatomic particle with no charge:

To prove wrong by argument or evidence

The study of rocks and minerals.

Movement of water through a membrane.

The prefix "mono-" means:

The male gamete of a flower is:

The prefix "Chloro-" means:

The gaseous form of a liquid.

A naturally occurring element or compound found in the Earth's crust.

The likelihood a specific event will occur.

A large molecule made up of repeating units of one or more small molecules (monomers).