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Middle round (ages 9–11): Weather · Planet Earth. Pages: the ten question cards, two answer sheets to a page (print one page per two teams), and the key on the last page, to fold back.
1. A snowflake begins when a very cold water droplet freezes onto what?
- A. a bubble of air
- B. a speck of pollen or dust
- C. a raindrop
2. Which became the world's first national park, in 1872?
- A. Yellowstone
- B. the Grand Canyon
- C. Yosemite
3. Hurricanes form over what?
- A. cold mountains
- B. dry deserts
- C. warm ocean water
4. Near Grand Canyon Village, about how deep is the canyon from rim to river?
- A. about 100 feet
- B. about one mile
- C. about 10 miles
5. Rising water vapor cools and turns into the droplets that make clouds. What is this called?
- A. condensation
- B. evaporation
- C. transpiration
6. What causes Earth's seasons?
- A. the Moon blocking sunlight
- B. Earth moving closer to the Sun
- C. the tilt of Earth's axis
7. From an airplane, what shape can a whole rainbow be?
- A. a straight line
- B. a full circle
- C. a square
8. Which rain is colder than 32°F but stays liquid until it hits something?
- A. freezing rain
- B. sleet
- C. hail
9. Thin, wispy cirrus clouds are made mostly of what?
- A. dust
- B. ice crystals
- C. raindrops
10. When the Sun heats a lake and its water turns into vapor, what is that called?
- A. evaporation
- B. precipitation
- C. condensation
Team: ______________________
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Team: ______________________
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The key (for the host: fold this page back)
- B: a speck of pollen or dust. The speck of pollen or dust is up in the sky, and the droplet is extremely cold.
- A: Yellowstone. Its geysers and hot springs were a big reason it was protected.
- C: warm ocean water. Warm, moist air rising off the sea is the fuel that keeps a hurricane going.
- B: about one mile. That is about 5,000 feet straight down from the South Rim.
- A: condensation. You can see condensation when drops form on the outside of a cold glass.
- C: the tilt of Earth's axis. Northern winter actually comes when Earth is closest to the Sun.
- B: a full circle. From the ground, the land gets in the way, so we only see an arc.
- A: freezing rain. When its drops touch anything, they turn to ice at once.
- B: ice crystals. Cirrus clouds float very high up, where the air is freezing cold.
- A: evaporation. Water vapor is an invisible gas that rises into the air.
Every answer checked at its source. Play this round on a screen: peabody.kids/trivia/round?r=b2.tweather*8,earth*2.s74