Topic 15

Question 1

What is kinetic theory?

Answer 1

States that everything is made of tiny particles

Question 2

How is ice lost from the top of glaciers

Answer 2

By sublimation

Question 3

Arrangement of solid

Answer 3

Forces of attraction hold particles closely together, the particles can vibrate but they cannot move around which explains why solids keep their shape and usually cannot be compressed

Question 4

arrangement of liquid

Answer 4

particles are moving faster so the forces of attraction are not strong enough to hold them in fixed positions. The particles can move past each other so liquids flow and take the shape of their container. The particles are still very close together so they usually cannot be compressed

Question 5

arrangement of gass

Answer 5

Particles are far apart and moving around quickly, gases are compressible and expand to fill their container

Question 6

Is ice less dense tha nwater

Answer 6

Yes but this is unlike other substances where solid is more dense

Question 7

Equation for density

Answer 7

mass/volume

Question 8

for pressure where is force measured

Answer 8

Normal to the surface

Question 9

What does pressure depend on for liquid

Answer 9

The density of the fluid

Question 10

What does the pressure at any point in a fluid depedn on?

Answer 10

The weight of the fluid above

Question 11

Equation for pressure due to a column of liquid

Answer 11

Hieght of collumn x density of liquid x gravitation field strength