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Big round (ages 12 and up): The ocean · Weather. 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. The Great Barrier Reef is made up of nearly how many individual reefs?
- A. about 3,000
- B. about 30
- C. about 300,000
2. Winds blowing in different directions or speeds at different heights are called what?
- A. the jet stream
- B. trade winds
- C. wind shear
3. Octopus blood is blue because its oxygen-carrying protein contains which metal?
- A. iron
- B. copper
- C. silver
4. A storm officially becomes a hurricane when its winds reach what speed?
- A. 74 miles per hour
- B. 39 miles per hour
- C. 200 miles per hour
5. Spring tides happen around which phases of the moon?
- A. waxing and waning crescent
- B. new moon and full moon
- C. first and third quarter
6. Which tiny ocean bacterium, the smallest photosynthetic organism on Earth, makes up to 20% of our oxygen?
- A. Streptomyces
- B. Prochlorococcus
- C. Lactobacillus
7. What is the deepest known part of the ocean called?
- A. the Java Trench
- B. the Puerto Rico Trench
- C. the Challenger Deep
8. What is the average depth of the ocean?
- A. about 36,820 meters
- B. about 368 meters
- C. about 3,682 meters
9. In most sea turtles, what decides whether a hatchling is male or female?
- A. the temperature of the eggs
- B. the phase of the moon
- C. the size of the eggs
10. Stony coral polyps build reefs from skeletons made of what?
- A. silica
- B. calcium carbonate
- C. keratin
Team: ______________________
| 1 | ABC |
| 2 | ABC |
| 3 | ABC |
| 4 | ABC |
| 5 | ABC |
| 6 | ABC |
| 7 | ABC |
| 8 | ABC |
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| 10 | ABC |
Team: ______________________
| 1 | ABC |
| 2 | ABC |
| 3 | ABC |
| 4 | ABC |
| 5 | ABC |
| 6 | ABC |
| 7 | ABC |
| 8 | ABC |
| 9 | ABC |
| 10 | ABC |
The key (for the host: fold this page back)
- A: about 3,000. It stretches for about 1,429 miles off the coast of Queensland, Australia.
- C: wind shear. Wind shear helps set up the spinning air inside storms that can form tornadoes.
- B: copper. The protein is called haemocyanin; human blood uses iron-based haemoglobin.
- A: 74 miles per hour. At 39 miles per hour, a storm is first called a tropical storm.
- B: new moon and full moon. The name comes from the tide 'springing forth,' not from the season.
- B: Prochlorococcus. Most of the ocean's oxygen comes from drifting plankton like this.
- C: the Challenger Deep. It lies at the southern end of the Mariana Trench in the western Pacific.
- C: about 3,682 meters. That is about 12,080 feet, more than two miles down.
- A: the temperature of the eggs. Scientists call this temperature-dependent sex determination, or TSD.
- B: calcium carbonate. Most stony coral polyps are only one to three millimeters across.
Every answer checked at its source. Play this round on a screen: peabody.kids/trivia/round?r=b3.tsea*8,weather*2.s3682