The water cycle & freshwater

1. What forms when cold air cools water vapour below 0 °C high in clouds so ice crystals grow into six-sided flakes: snow or dew?

2. What happens when moist air is forced to rise over a mountain range: it cools, condenses and drops rain on the windward side, or it warms and dries?

3. What is the dry region on the leeward (downwind) side of a mountain range called: a rain shadow or a delta?

4. What do we call water that flows over the land surface into streams, rivers and the sea after rainfall: surface runoff or sublimation?

5. What stage of the water cycle occurs when rising water vapour cools high in the atmosphere and forms tiny cloud droplets: condensation or infiltration?

6. What happens to river discharge shortly after heavy rainfall in its drainage basin: river flow increases, or river flow stops?

7. When spring temperatures warm mountain snowpacks, the resulting liquid water flowing into streams is called: snowmelt runoff or condensation?

8. What combined term describes the total water vapour transferred to the atmosphere from both soil evaporation and plant transpiration: evapotranspiration or precipitation?

9. When snow and ice on a high mountain turn directly into water vapour in dry sunlight without melting first, that process is: sublimation or runoff?

10. What do we call the release of water vapour into the air from plant leaves through their stomata: transpiration or condensation?

11. What stage of the water cycle occurs when cloud droplets grow heavy enough to fall as rain, snow, sleet or hail: precipitation or evaporation?

12. What energy source drives the global water cycle by warming ocean and land surfaces: the Sun or the Moon?