What causes the weather?

Which of these is the correct definition of weather?

• The long term patterns of wind and sunshine.

• The day to day amount of sunshine.

• How much water is in the atmosphere every day.

• The day to day changes in the atmosphere.

Which part of the Earth gets heated up the most by the sun?

• The North Pole

• The South Pole

• The Equator

• The Prime Meridian

Which of these statements explain how wind is formed?

• Air heated by the sun rises. Cooler air doesn't rise and rushes in below the warmer air to replace it.

• Air heated by the sun sinks. Warmer air doesn't rise and rushes in above the cooler air to replace it.

• Air heated by the sun rises. Cooler air rises faster and pushes the warm air away from underneath it.

• Air heated by the sun rises. Cooler air doesn't rise, blocks the warmer air and pushes it away.

When the sun heats up water it turns the water into a gas called water vapour. What is this process called?

• Condensation

• Precipitation

• Evaporation

• Perspiration

How is water vapour carried to different locations?

• By the wind

• By the oceans

• By lightning

• By birds

When air carrying water vapour rises, it cools down to form clouds. What is this process called?

• Condensation

• Evaporation

• Perspiration

• Transpiration

When water droplets in clouds join together and grow larger, it forms rain, snow, sleet and hail. What is this process called?

• transpiration

• perspiration

• condensation

• precipitation

Why do the water droplets in the air sometimes fall as snow, hail or sleet?

• The clouds are frozen and break apart.

• The air temperature is low so the droplets freeze as they fall.

• It is too cloudy so the sun can't heat them up.

• It isn't windy enough to blow the water droplets into smaller pieces.

What causes fog to form?

• Water vapour condenses lower down rather than higher up in the sky. It means that the droplets form all around us.

• The temperature of the ground is higher than the sky so the droplets evaporate when they fall.

• The clouds become too warm too quickly so sink lower and lower.

• Water vapour condenses higher up in the sky. This means that the droplets are thinner and are moving more slowly by the time they hit the ground.

All weather is made up of which three elements?

• Heat, air and wind

• Sunshine, water and rain

• Heat, water and air

• Air, wind and water