Changes Of State

Question 1

Melting

Answer 1

When solid ice gains thermal energy, it changes state from solid ice to liquid water. For example, ice in a cold drink, gradually melt.

Question 2

Sublimation

Answer 2

Sometimes adding thermal energy to solid ice causes a change of state from a solid to a gas. For example, on a dry winter day, snow tends to disappear, without becoming slushy, or wet.

Question 3

Evaporation

Answer 3

When water absorbs enough thermal energy, it becomes a gas/water vapor. For example, wet clothes on a washing line dry because the water evaporates into air

Question 4

Condensation

Answer 4

When water vapour/gas lose thermal energy and becomes liquid water, condensation has occurred. For example, a cold can of pop placed outside on a summer day often collects water droplets.

Question 5

Deposition

Answer 5

Sometimes, removing thermal energy from water vapour causes it to become a solid, than a liquid. Deposition is when gas goes from water vapour to a solid. For example, in the atmosphere, where the temp is low, water vapour forms snow without becoming a liquid first.

Question 6

Freezing

Answer 6

Liquid water can also lose thermal energy, changing state from a liquid to a solid. For example, puddles, ponds, lakes, and even parts of the ocean freeze when the water becomes cold enough.

Question 7

Transpirtation

Answer 7

Is the process by which water is pulled from the roots of the plant through the stems and leaves and released through microscopic holes in the leaves called stomata.

Question 8

Transportation

Answer 8

Is the process that involves movement of water and necessary nutrients to all parts of the plant for its survival.

Question 9

Precipitation

Answer 9

Is any liquid or frozen water that forms in the atmosphere and falls back to the earth. Such as rain, snow, hail, and sleet.