Glossary results for "V"

a region of space where there is no matter or energy

a device that controls the flow of fluids

a chemical element with the symbol V and atomic number 23

a substance that has turned from a liquid into a gas

a quantity that can change

a resistor whose resistance can be changed

a plant part that is eaten as food

the plant life of a region

a machine that moves people or goods from one place to another

a blood vessel that carries blood back to the heart

the process of exchanging air in a closed space

a large chamber in the heart that pumps blood

the second planet from the Sun

animals that have a backbone

relating to animals or their diseases

a repetitive motion back and forth around a central point

a modern constellation in the northern hemisphere, representing a maiden with a sheaf of wheat and featuring the bright star Spica

a scientist who studies viruses

a non-living particle that can infect cells and cause disease

nutrients that your body needs to stay healthy

a vitamin that helps your body absorb calcium and phosphorus

the study of volcanoes

a unit of electrical potential difference

a measure of the "pressure" that pushes electricity through a wire

a tool that measures the voltage between two points in an electric circuit

the amount of space an object takes up

being open to attack or harm