pressure in fluids.

Question 1

explain why can’t a liquid be compressed?

Answer 1

particles are already close together.

Question 2

what is pressure?

Answer 2

force spread over an area.

Question 3

how is pressure in gases similar to pressure in liquids?

Answer 3

acts in all directions.

Question 4

what causes pressure?

Answer 4

particles colliding with walls of containers.

Question 5

can you compress gases and why?

Answer 5

yes. plenty of space to move particles into.

Question 6

explain why atmospheric pressure decreases with increasing altitude?

Answer 6

• at increasing altitudes distance between molecules increase.
• at increasing altitude few molecules are abouve a surface.
• so always less weight of air than below surface.