Air masses, fronts and the weather they bring
Grade 6 Science Worksheet - Challenge Me
Circle the best answer.
A cold front lies just west of St. Louis, moving east. Behind it is 45°F; ahead it is 70°F. Which forecast does Esme give St. Louis for tomorrow?
- Storms, then even warmer air
- Storms as the front passes, then cooler
- Warm and humid the whole day, with no change
- No change, since fronts move west
Map of the Great Lakes with arrows of cold air crossing open lake water toward towns on the far shore. In early winter, cold, dry air from Canada blows across the still-unfrozen Great Lakes. What does Jun forecast for towns just downwind?
- Snow, as the air picks up moisture from the lakes
- No change, since air masses can't pick up water
- Clear skies, since the air stays dry
- Warm rain, since the lakes heat the air a lot
Weather map with a large H covering the state for Saturday and Sunday. A large high-pressure system will sit over Kira's state all weekend. Which plan fits the forecast best?
- Expect a quick storm, then cooler air
- Pack rain gear for a steady soaking
- Plan an outdoor picnic, since skies should be clear
- Stay inside; heavy rain is likely
Luz's friend says a cold front is just a line on a map and does not change the weather. Which response is best?
- Agree: warm fronts are the ones that change weather
- Disagree: it lifts warm air, often bringing storms and cooler air
- Disagree: cold fronts bring warmer air
- Agree: fronts are drawn on maps just to fill the empty space
Map of the United States with an arrow labeled "usual path?" left blank. A video says weather across the United States usually moves from east to west. Milo checks NOAA. Which response is best?
- Disagree: it usually moves from west to east
- Agree: winds over the country blow from the east
- Agree: weather has no usual direction across the country
- Disagree: it usually moves north to south
Map with an air mass outlined over the tropical Atlantic Ocean. Noah's cousin says air from the tropical Atlantic Ocean must be dry because it is warm. Which response is best?
- Disagree: tropical Atlantic air is cold and moist
- Agree: warm air holds no water
- Agree: air over a warm ocean dries out in the heat, so it is dry
- Disagree: it formed over water, so it is moist
“not to scale” Pia's side view shows a cold front: X in the warm air far ahead, Y just above the front's edge, Z deep in the cold air behind. Where do tall storm clouds form?
- Nowhere; the cold and warm air just blend together quietly
- Z, deep in the cold air behind
- X, in the warm air far ahead
- Y, where warm air is pushed up steeply
An arrow of air rising along a front, with a cloud forming higher up where it is cooler. Air rising at a front makes clouds. Which explanation of why does Tala choose?
- Sinking air is what makes clouds
- Rising air cools, and its water vapor condenses
- Rising air warms up as it climbs, so it dries out
- The front gives off smoke as it moves
Air pressure falling over 2 days, with cloud drawings thickening along the top. For two days, the air pressure at Ari's school falls and the clouds thicken. What is most likely coming?
- Nothing, since pressure changes don't matter
- A hot, dry desert air mass moving in from the southwest
- A low-pressure system with clouds and rain
- A high-pressure system with clear skies
Bo sees rain over Denver this morning and over Kansas City by evening. Where should the rain be tomorrow?
- Farther east, near St. Louis
- Nowhere; storms stop after one day
- Back over Denver
- Over Salt Lake City, farther to the west of Denver