What allows the cells of an organism to use carbon from the enviornment? - correct answer
Photosynthesis
During photosynthesis in plants, what is the source of the carbon in the sugar molecule? - correct
answer carbon dioxide in the air
Change of phase is a process whereby matter changes form (solid, to liquid, to gas). What constitutes
this phase change? - correct answer candle melting, ice being boiled
Newtons law of motion provides that an object set in motion remains in motion unless a force acts upon
it. If you suspend a ball from a tree with a piece of string and make it swing, the ball will swing for a
while, then slow down and stop. Why does the ball stop swinging? - correct answer because energy of
motion is converted to heat through friction with the air.
Give facts about gravity. - correct answer 1.) the more massive two objects are, the greater the
gravitational force is.
2.)People can jump higher on the Moon than on Earth because the gravitational force between them.
3.)Gravitational force between two objects depends on the distance between them.
Two positively charged objects will ________ - correct answer repel each other
Name a structure that is not found in bacteria. - correct answer nuclear membrane
What will always remain the same during a chemical change? - correct answer the number of atoms
Why do people like to wear coats in the winter? - correct answer Coats decrease the amount of body
heat lost to surroundings because of insulation