Middle School Set 6 (2012) - Round 2 - Question 19

See the original
Report a problem

TOSS-UP: LIFE SCIENCE Multiple Choice

Which of the following is the male reproductive part of a flower?

  • W. Stamen
  • X. Sepal
  • Y. Petal
  • Z. Pistil

Click or hit Enter to view answer

Middle School Set 14 (2020) - Round 2 - Question 9

See the original
Report a problem

BONUS: ENERGY Multiple Choice

Researchers at Thomas Jefferson National Accelerator Facility are studying ways to polish niobium superconducting cavities without hydrofluoric acid. Which of the following best describes the problem with using hydrofluoric acid?

  • W. It is extremely dangerous to human health
  • X. It is not a strong acid, so it cannot polish very well
  • Y. Very high pressures are required to keep it in liquid form
  • Z. It interferes with the superconducting properties of niobium

View answer

Middle School Set 2 (2008) - Round 1 - Question 5

See the original
Report a problem

TOSS-UP: GENERAL SCIENCE Multiple Choice

Rickets, which was a common disease in the early twentieth century, is caused by a deficiency in what vitamin:

  • W. riboflavin
  • X. vitamin B12
  • Y. vitamin K
  • Z. vitamin D

View answer

Middle School Set 5 (2011) - Round 2 - Question 21

See the original
Report a problem

BONUS: PHYSICAL SCIENCE Short Answer

By name or number, rank the speed of sound through the following three mediums from fastest to slowest at 25° Celsius: 1) aluminum, 2) air, 3) water.

View answer

Middle School Set 3 (2007) - Round 1 - Question 16

See the original
Report a problem

BONUS: LIFE SCIENCE Short Answer

What outer structure possessed by plant cells protects them from environmental changes and helps them maintain their shape during stress and times of water loss?

View answer

High School Set 15 (2021) - Round 2 - Question 3

See the original
Report a problem

BONUS: Earth and Space Multiple Choice

An Ekman spiral in the surface ocean is created by the combined effect of what two influences?

  • W. Wind and water upwelling
  • X. Wind and water downwelling
  • Y. Coriolis force and water downwelling
  • Z. Coriolis force and wind

View answer

High School Set 13 (2019) - Round 1 - Question 23

See the original
Report a problem

BONUS: Chemistry Short Answer

What is the systematic name of the compound NaOCl?

View answer

High School Set 9 (2015) - Round 1 - Question 10

See the original
Report a problem

BONUS: MATH Short Answer

A particle’s position is defined by the equation x(t) = 2t³ – 15t² + 24t – 60. At what times t is the particle at rest?

View answer

Middle School Set 11 (2017) - Round 1 - Question 23

See the original
Report a problem

BONUS: EARTH AND SPACE SCIENCE Short Answer

To the nearest tenth of a day, how long is a sidereal month?

View answer

High School Set 14 (2020) - Round 2 - Question 3

See the original
Report a problem

TOSS-UP: MATH Short Answer

A new phone costs $1,000. Each month the value of the phone decreases by 10% of its value at the beginning of the month. How many dollars would the phone be worth after three months?

View answer

Next Question Set