You are in Competition mode!

Enter to start; Spacebar to buzz; "Esc" to cancel a running question.

High School Set 15 (2021) - Round 1 - Question 1

See the original
Report a problem

TOSS-UP: Energy Short Answer

Scientists at Fermi National Lab are studying the decay modes of the lightest group of mesons. What is the name of this group of 3 particles?

Click or hit Enter to start
High School Set 15 (2021) - Round 1 - Question 1

See the original
Report a problem

BONUS: Energy Short Answer

Researchers at Los Alamos National Lab are studying the effects of Super El Nino events in the past, including the one that occurred from 2015 to 2016. Identify all of the following three changes that are consequences of an El Nino event: 1) Increases in soil moisture in India; 2) High air pressure in the Western Pacific; 3) High sea surface temperatures off the coast of Peru.

Click to start
High School Set 15 (2021) - Round 1 - Question 2

See the original
Report a problem

TOSS-UP: MATH Multiple Choice

In the prime factorization of a perfect square, the exponents of the prime factors must be which of the following types of numbers?

  • W. Even
  • X. Odd
  • Y. Prime
  • Z. Perfect squares
Click to start
High School Set 15 (2021) - Round 1 - Question 2

See the original
Report a problem

BONUS: MATH Short Answer

A right circular cylinder has height 15 and diameter 18. What is its surface area?

Click to start
High School Set 15 (2021) - Round 1 - Question 3

See the original
Report a problem

TOSS-UP: Physics Multiple Choice

Which of the following best describes the volume of a 10-gram sample of water as a function of temperature?

  • W. Linearly increasing from 0 to 100 degrees Celsius
  • X. Linearly decreasing from 0 to 100 degrees Celsius
  • Y. Non-linear with a local maximum at 4 degrees Celsius
  • Z. Non-linear with a local minimum at 4 degrees Celsius
Click to start
High School Set 15 (2021) - Round 1 - Question 3

See the original
Report a problem

BONUS: Physics Short Answer

Lightning strikes a lightning rod on a building that is 3 kilometers away from you. To the nearest whole second, how long will it take the sound of the thunder to reach you?

Click to start
High School Set 15 (2021) - Round 1 - Question 4

See the original
Report a problem

TOSS-UP: BIOLOGY Short Answer

What vitamin is essential in humans for the synthesis of several blood clotting factors?

Click to start
High School Set 15 (2021) - Round 1 - Question 4

See the original
Report a problem

BONUS: BIOLOGY Multiple Choice

Coronaviruses are positive-sense single-stranded RNA viruses. Which of the following describes how their genetic material is processed after entering a cell?

  • W. Transcribed to mRNA with RNA-dependent RNA polymerase [pah-LIM-er-ace]
  • X. Directly translated by host ribosomes
  • Y. Reverse transcribed to DNA with reverse transcriptase
  • Z. Translated after assembly of viral ribosomes
Click to start
High School Set 15 (2021) - Round 1 - Question 5

See the original
Report a problem

TOSS-UP: Chemistry Short Answer

What is the value of the reaction quotient when the change in Gibbs free energy is zero?

Click to start
High School Set 15 (2021) - Round 1 - Question 5

See the original
Report a problem

BONUS: Chemistry Short Answer

Match the flame test colors blue, green, and purple to the following three metals or compounds: 1) Boric acid; 2) Potassium; 3) Cesium.

Click to start

Next Question Set