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How many times does the Earth orbit the Sun in one year?
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1
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2
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3
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4
How many times does Halley's Comet appear in the sky in a century?
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1
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2
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3
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4
How many times does the average human heart beat in a day?
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10,000
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50,000
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100,000
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150,000
How many times do tides change each day?
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1
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2
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3
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4
How many times can a hummingbird flap its wings per second?
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10
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30
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50
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70
How many times does a leap year occur in a 400-year cycle?
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97
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98
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99
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100
How many times does the Moon rotate on its axis during one orbit around Earth?
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1
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2
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3
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4
How many times does a typical honeybee visit flowers in one trip?
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10
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50
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100
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150
How many times does the International Space Station orbit the Earth in a day?
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8
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12
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16
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24
How many times can an albatross fly around the Earth in its lifetime?
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1
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5
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8
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10
How many times does a tree frog call in one minute during mating season?
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10
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20
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30
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40
How many times does a cheetah's heart beat per minute while running at full speed?
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120
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150
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170
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200
How many times does the Earth experience a total lunar eclipse in a decade?
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5
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7
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8
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9
How many times does a blue whale's heart beat per minute while diving?
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2
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10
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15
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20
How many times does a typical human blink in a minute?
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5
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10
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15
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20
