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Middle School Set 3 (2007) - Round 14 - Question 21

BONUS: LIFE SCIENCE Short Answer

Over-hunting of sea otters on the northwest coast led to an overabundance of sea urchins which in turn overgrazed on sea kelp almost wiping out the kelp forests. What is the scientific ecological term for what the sea otter is considered in this case as a central organism to this community?

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High School Set 12 (2018) - Round 2 - Question 21

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BONUS: Earth and Space Short Answer

What is the term for objects that revolve around the Sun between the orbits of Jupiter and Neptune and are thought to be scattered Kuiper [KYE-pur] Belt objects?

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Middle School Set 6 (2012) - Round 10 - Question 18

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BONUS: EARTH AND SPACE SCIENCE Short Answer

What group of minerals has the following characteristics: 1) they can be gemstones or abrasives; 2) they are found in many colors; 3) they have a hardness of about 6.5 to 7.5; and 4) they are nesosilicates [nee-soh-SIL-i-kayts].

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Middle School Set 4 (2010) - Round 8 - Question 7

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BONUS: LIFE SCIENCE Multiple Choice

You are using a dichotomous key to identify a leaf you have picked up. You observe that you have a leaf with several main veins of about equal size, all of which extend from a common point at the base of the blade. Your leaf could be from which of the following trees?

W. Maple
X. Beech
Y. Birch
Z. Elm

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High School Set 11 (2017) - Round 2 - Question 15

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TOSS-UP: MATH Short Answer

The sum of two consecutive prime numbers is 30. What is the larger of the two numbers?

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High School Set 6 (2012) - Round 13 - Question 16

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BONUS: Physics Short Answer

If a spaceship moving at relativistic speed v appears to be shortened to 4/5 its original length, what is its speed as a fraction of the speed of light, c, in lowest terms?

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Middle School Set 14 (2020) - Round 2 - Question 23

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BONUS: MATH Short Answer

For positive integer values of n, identify all of the following four expressions for the n^th term of a sequence that result in a geometric sequence: 1) n; 2) n²; 3) The n^th power of -3; 4) 2 to the n^th power.