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Middle School Set 3 (2007) - Round 6 - Question 9

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BONUS: MATH Short Answer

A cell phone company charges 25 cents per minute for the first 10 minutes of usage and 10 cents per minute for usage greater than 10 minutes. If you talked for 1½ hours, what is your total airtime charge?

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Middle School Set 3 (2007) - Round 8 - Question 8

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TOSS-UP: PHYSICAL SCIENCE Multiple Choice

Acids are often defined as proton donors. Which of the following is the common form of this proton:

  • W. salts
  • X. positive hydrogen ion
  • Y. positron
  • Z. buffer
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Middle School Set 9 (2015) - Round 1 - Question 5

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BONUS: PHYSICAL SCIENCE Multiple Choice

X-rays are composed of beams of what particles?

  • W. Positrons
  • X. Protons
  • Y. Electrons
  • Z. Photons
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Middle School Set 10 (2016) - Round 7 - Question 5

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BONUS: MATH Short Answer

To the nearest whole number, what is the length of the hypotenuse in a right triangle with legs of length 14 and 9?

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Middle School Set 14 (2020) - Round 7 - Question 20

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BONUS: PHYSICAL SCIENCE Short Answer

A microscope lens used to focus light emitted by a sample onto the user's eyes is most likely to have what type of curvature?

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Middle School Set 9 (2015) - Round 3 - Question 15

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BONUS: LIFE SCIENCE Short Answer

Identify all of the following four choices that would not be visible under a standard laboratory light microscope when visualizing a plant cell: 1) DNA; 2) Ribosome; 3) Cell wall; 4) Chloroplast.

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Middle School Set 3 (2007) - Round 1 - Question 13

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TOSS-UP: EARTH SCIENCE Multiple Choice

Which of the following does NOT satisfy the scientific definition of a mineral:

  • W. it is always an inorganic substance
  • X. it has a distinct chemical composition
  • Y. it can be a solid or a molten substance
  • Z. it must form by natural processes
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Middle School Set 15 (2021) - Round 3 - Question 13

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TOSS-UP: MATH Short Answer

What is the area of a right triangle with legs of lengths 13 and 14?

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Middle School Set 4 (2010) - Round 3 - Question 13

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TOSS-UP: LIFE SCIENCE Short Answer

In vascular plants, what is the name of the transport tissue that primarily carries water to the plant?

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Middle School Set 2 (2008) - Round 6 - Question 10

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TOSS-UP: GENERAL SCIENCE Short Answer

This powerful telescope weighs about 11 tons, has a primary mirror 7.9 feet in diameter, and orbits about 380 miles above the earth:

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