Physical Science Vocabulary

The speed and direction of a moving object.

• acceleration
• net force
• velocity
• maximum speed

Process in which one or more substances are changed into a new substance.

• physical reaction
• chemical reaction
• combustion reaction
• change reaction

Substances with atoms that are all alike.

• element
• compound
• isotope
• ion

A small body of ice, rock and cosmic dust that follows an elliptical obit around the sun and forms a tail.

• moon
• planet
• black hole
• comet

Any living factor in an organism"s environment.

• biotic
• abiotic
• cellular substance
• nature

A substance in which the atoms of two or more elements are combined in a fixed proportion.

• element
• isotope
• compound
• ion

Rate of change of velocity. It can be calculated by  dividing the change in velocity by the time it takes the change to occur

• velocity
• acceleration
• speed
• centripetal force

Any nonliving factor in an organism's environment. 

• cellular substance
• abiotic
• biotic
• photosynthesis

Fireworks is an example of __________

• Mallebility
• Chemical reaction
• Physical reaction
• Color change

Soil, light and water temperature are examples of _______________

• Environmental development
• biotic factors
• abiotic factors
• global warming