Air masses, fronts and the weather they bring

Grade 6 Science Worksheet

Circle the best answer.

1. 1.

   A warm front slowly moves into Esme's area. Which weather pattern comes with it?

   • Hours of steady, light rain, then warmer air
   • Clear skies the whole time
   • Cooler, drier air right away
   • A quick storm, then cooler air
2. 2.

   “Weather map:” A cold front moving east lies between City A (to the west, 55°F) and City B (to the east, 80°F). Which city does Kira expect storms in next?

   • City B, ahead of the front
   • Neither; fronts don't bring storms
   • City A, behind the front
   • Both cities at the same time
3. 3.

   On Luz's map, City P sits under an L and City Q sits under an H. Which city is more likely to have clouds and rain?

   • Neither; pressure has no effect
   • City P, under the L
   • Both cities equally
   • City Q, under the H

4. Read this first

   Use this

   Map of the central United States with a rain area over Kansas; Colorado to the west and Missouri to the east are labeled.

5. 4.

   A rainstorm is over Kansas today. Where is it most likely to be tomorrow, by Milo's forecast?

   • Straight north into Canada
   • Farther east, toward Missouri
   • Still over Kansas, since storms stay put
   • Farther west, over Colorado
6. 5.

   In spring, moist air from the Gulf meets dry desert air over west Texas. What often forms along the line where they meet, says Noah?

   • Thunderstorms
   • Nothing; the two air masses mix quietly
   • Snow, since desert air is cold
   • Clear skies, since the dry air wins
7. 6.

   a wedge of cold air moving right and pushing into warm, humid air; arrows over the warm air are blank. Cold air from Canada pushes into warm, humid air over Iowa. What happens to the warm air, in Pia's notes?

   • It turns into cold, dry air at once on contact
   • Nothing; the air masses stay apart
   • It sinks underneath the cold air
   • It is pushed up, cools and forms clouds
8. 7.

   “Side view:” A warm front is moving north toward Ren's town. Where do its first clouds usually appear?

   • Nowhere; warm fronts bring clear skies
   • Right on the front line, not before
   • Behind the front, after it passes
   • Far ahead of the front, as warm air slides up

9. Table, Weather log (example data), with columns Time, Temperature, Pressure, Wind and Sky

   1 p.m., 82°F (28°C), pressure falling, wind from the south, hazy; 3 p.m., 80°F, lowest pressure, wind from the south, cloudy; 4 p.m., temperature and pressure not recorded, wind shifts to the west, thunderstorm; 6 p.m., 68°F (20°C), pressure rising, wind from the northwest, clearing.

10. 8.

    Tala reads a weather log from one afternoon. About when did the cold front pass?

    • Around 6 p.m., when the sky cleared
    • Around 4 p.m., with the storm and wind shift
    • Around 1 p.m., when it was warmest
    • It was a warm front, since the day began warm
11. 9.

    Using the same log, which entry best shows that cooler, drier air has arrived, by Zee's reading?

    • The 4 p.m. thunderstorm
    • The 3 p.m. lowest pressure
    • The 1 p.m. south wind
    • The 6 p.m. drop to 68°F with northwest wind
12. 10.

    Ari's barometer rises steadily for two days, from 29.70 to 30.20 inches. Which weather does Ari expect?

    • More clouds and rain as low pressure deepens
    • Clearing skies as high pressure moves in
    • No change, since pressure doesn't matter
    • A warm front with steady rain