science unit 2 quiz 1

Question 1

earths atmosphere

Answer 1

78% nitrogen 21% oxegen 0.93%argono, 0.04% carbon dioxide, 0.03% other gases

Question 2

air pressure

Answer 2

The force of air molecules, pressing on other particles and objects; the weight of the air above you.

Question 3

tempurature

Answer 3

the mesure of how fast the molecules are moving

Question 4

Diffusion

Answer 4

When particles move an area of high concentration area of low concentration

Question 5

Convection

Answer 5

Movement of matter, due to differences in densities example, lava lamp, the transfers of energy due to the movement of matter

Question 6

Low air pressure

Answer 6

Air particles are farther apart conditions, clouds, wind, and precipitation

Question 7

High air pressure

Answer 7

Air particles are closer together, conditions for calm and mild weather.

Question 8

Temperature

Answer 8

The measure of how fast the molecules are moving

Question 9

Density

Answer 9

the mass per unit volume of a material Less dense things tend to rise. more dense things tend to sink.

Question 10

Wind

Answer 10

The movement of air caused by uneven heating on earth surface, creating air pressure differences