HS Sample Set 6, Round 6 from NSB

Questions in Packet

TOSS-UP bio phrase

What is the common name of the group of marine spiny-finned fish of the order Heterosomata, all of which, when adult, swim along the sea floor on one side of the body, which is highly compressed and has both eyes on the uppermost side?

Acceptable Answers:

  • FLATFISH

BONUS bio multiple_choice

Which of the following statements is NOT true about otters? W) Newborn otters are taken care of by their fathers only X) Their dens are called holts or couches Y) They feed on fish, shellfish, amphibians and birds Z) A male otter is called a dog

W: W) Newborn otters are taken care of by their fathers only

X: X) Their dens are called holts or couches

Y: Y) They feed on fish, shellfish, amphibians and birds

Z: Z) A male otter is called a dog

Answer: W) W) Newborn otters are taken care of by their fathers only

TOSS-UP ess multiple_choice

Which of the following best describes where the salt in ocean water comes from? W) Melting of glacial ice X) Weathering of continental rocks Y) Decomposition of plants and animals Z) Precipitation of salty rain

W: W) Melting of glacial ice

X: X) Weathering of continental rocks

Y: Y) Decomposition of plants and animals

Z: Z) Precipitation of salty rain

Answer: X) X) Weathering of continental rocks

BONUS ess multiple_choice

Cayes [KAYS] are small sandy islands formed on the surface of coral reefs in tropical areas like the coast of Belize. The sand on these cayes is primarily composed of which of the following? W) Silicate X) Calcium carbonate Y) Sulfide Z) Halide

W: W) Silicate

X: X) Calcium carbonate

Y: Y) Sulfide

Z: Z) Halide

Answer: X) X) Calcium carbonate

TOSS-UP phys multiple_choice

Which of the following cells cannot be recharged? W) Dry X) Wet Y) Primary Z) Secondary

W: W) Dry

X: X) Wet

Y: Y) Primary

Z: Z) Secondary

Answer: Y) Y) Primary

BONUS phys multiple_choice

Changing which of the following will NOT result in a change in the voltage induced in a rotating wire coil? W) Rate of rotation X) Wire resistance Y) Number of coil loops Z) Average loop area

W: W) Rate of rotation

X: X) Wire resistance

Y: Y) Number of coil loops

Z: Z) Average loop area

Answer: X) X) Wire resistance

TOSS-UP math phrase

What is x equal to in the following expression: logₓ 7 = 1?

Acceptable Answers:

  • 7

BONUS math phrase

If the length, width, and height of a right rectangular prism are in the ratio of 3 : 4 : 12, find the height in meters of the solid if the diagonal of the solid is 26 meters long.

Acceptable Answers:

  • 24

TOSS-UP chem multiple_choice

When assigning electrons to subshells, which of the following subshells will be filled first? W) 4f X) 5s Y) 5d Z) 6s

W: W) 4f

X: X) 5s

Y: Y) 5d

Z: Z) 6s

Answer: X) X) 5s

BONUS chem phrase

Which of the gas laws is demonstrated when an aerosol can is thrown into a fire and explodes?

Acceptable Answers:

  • AMONTON’S LAW
  • IDEAL GAS LAW, GAY-LUSSAC’S LAW

TOSS-UP energy phrase

What is the term for a device used to determine or measure the presence of electrostatic charges?

Acceptable Answers:

  • ELECTROSCOPE

BONUS energy phrase

What is the efficiency of an appliance whose useful energy output is 5 joules and wasted energy is 20 joules?

Acceptable Answers:

  • 20%

TOSS-UP math phrase

Given that $$g(x) \le f(x) \le h(x)$$ for all \(x\), \(\displaystyle\lim_{x\to a} g(x) = M\), and \(\displaystyle\lim_{x\to a} h(x) = M\), what is \(\displaystyle\lim_{x\to a} f(x)\)?

Acceptable Answers:

  • M

BONUS math phrase

What is the largest possible real domain of \(f(x) = \ln(3x - 1)\)?

Acceptable Answers:

  • \(x > \tfrac{1}{3}\)
  • THE OPEN INTERVAL FROM 1/3 TO POSITIVE INFINITY

TOSS-UP ess multiple_choice

Which of the following layers of the atmosphere allows AM radio stations to transmit over great distances at night? W) Ionosphere X) Stratosphere Y) Thermosphere Z) Troposphere

W: W) Ionosphere

X: X) Stratosphere

Y: Y) Thermosphere

Z: Z) Troposphere

Answer: W) W) Ionosphere

BONUS ess multiple_choice

Which of the following steps in atoll formation is the most mature? W) Erupting volcanic island X) Lagoon Y) Volcanic island with barrier reef Z) Volcanic island with fringing reef

W: W) Erupting volcanic island

X: X) Lagoon

Y: Y) Volcanic island with barrier reef

Z: Z) Volcanic island with fringing reef

Answer: X) X) Lagoon

TOSS-UP phys phrase

In 1868, observers of a solar eclipse first noticed a bright yellow spectral line. They theorized that this was due to a new element and gave it what sun-inspired name?

Acceptable Answers:

  • HELIUM

BONUS phys multiple_choice

An electroscope is negatively charged, with the leaves at an angle of about 45°. When a negatively charged rod is slowly brought near the plate of the electroscope, the leaves do which of the following? W) Repel X) Attract Y) Repel then attract Z) Fall to zero then repel

W: W) Repel

X: X) Attract

Y: Y) Repel then attract

Z: Z) Fall to zero then repel

Answer: W) W) Repel

TOSS-UP math phrase

W is one of the vertices of a polygon. If there are 8 diagonals of the polygon that contain W, how many sides does the polygon have?

Acceptable Answers:

  • 11

BONUS math phrase

A fair standard six-sided die is rolled two times. What is the probability that the sum of the numbers on the two rolls will be greater than 9?

Acceptable Answers:

  • 1/6

TOSS-UP chem phrase

What is the name of the bond linking each fatty acid to glycerol in a triglyceride?

Acceptable Answers:

  • ESTER

BONUS chem phrase

Several candidates have been proposed as the discoverer of oxygen. Who, however, is the scientist who most carefully documented his work and thus has been credited with its discovery?

Acceptable Answers:

  • PRIESTLY

TOSS-UP energy multiple_choice

Which of the following particles has the least penetrating power? W) Neutron X) Alpha particle Y) Beta particle Z) Positron

W: W) Neutron

X: X) Alpha particle

Y: Y) Beta particle

Z: Z) Positron

Answer: X) X) Alpha particle

BONUS energy multiple_choice

The power produced by a wind turbine depends primarily on which of the following parameters? W) Air volume X) Wind pressure Y) Blade radius Z) Air coefficient

W: W) Air volume

X: X) Wind pressure

Y: Y) Blade radius

Z: Z) Air coefficient

Answer: Y) Y) Blade radius

TOSS-UP bio phrase

Which gas was in short supply in the Earth’s atmosphere prior to the evolution of the citric acid cycle?

Acceptable Answers:

  • OXYGEN

BONUS bio multiple_choice

Neurons can communicate with each another at synapses via synaptic vesicles. Which of the following does NOT participate in communication at these sites? W) Neurotransmitter X) Gated channels Y) ATP dependent channels Z) Acetylcholine

W: W) Neurotransmitter

X: X) Gated channels

Y: Y) ATP dependent channels

Z: Z) Acetylcholine

Answer: Y) Y) ATP dependent channels

TOSS-UP ess multiple_choice

Kilauea and Mauna Loa are examples of which of the following types of volcanoes? W) Shield X) Composite Y) Cinder cone Z) Transform fault

W: W) Shield

X: X) Composite

Y: Y) Cinder cone

Z: Z) Transform fault

Answer: W) W) Shield

BONUS ess phrase

What is the geologic term for the sinking of large areas of land due to compaction of drained soil and rock layers?

Acceptable Answers:

  • SUBSIDENCE

TOSS-UP phys phrase

A lunar vehicle on Earth moves at 10 kilometers per hour. When it travels at the same speed on the Moon, what is its momentum in comparison to its momentum on Earth, assuming that the Moon’s gravitational force is one fifth that of Earth’s?

Acceptable Answers:

  • THE SAME
  • EQUAL

BONUS phys phrase

Coulomb’s law states that an electric force between two charges is inversely proportional to the square of what quantity?

Acceptable Answers:

  • DISTANCE BETWEEN THEM

TOSS-UP math multiple_choice

Which of the following numbers is NOT prime? W) 107 X) 109 Y) 111 Z) 113

W: W) 107

X: X) 109

Y: Y) 111

Z: Z) 113

Answer: Y) Y) 111

BONUS math phrase

Todd the Tortoise is 268 years old, while Sammy the Snail is 32 years old. How many years will it take for Todd’s age to be exactly 5 times Sammy’s age?

Acceptable Answers:

  • 27

TOSS-UP chem phrase

What element has the following four characteristics: 1) it occurs naturally only in combination with other elements in minerals; 2) it is used primarily as a hardening agent in alloys; 3) its dust is highly toxic; and 4) it is an alkaline earth metal?

Acceptable Answers:

  • BERYLLIUM

BONUS chem multiselect

Identify all of the following four compounds that are ionic: 1) sodium sulfate; 2) methane; 3) ammonium chloride; 4) beryllium iodide.

Choices:

  • sodium sulfate
  • methane
  • ammonium chloride
  • beryllium iodide

Correct Answers:

  • 1
  • 3

TOSS-UP energy multiple_choice

Rectifiers are used in computers and other appliances to do which of the following? W) Convert direct current to alternating current X) Convert alternating current to direct current Y) Provide a steady amount of power at all times Z) Reduce the energy consumption of an appliance

W: W) Convert direct current to alternating current

X: X) Convert alternating current to direct current

Y: Y) Provide a steady amount of power at all times

Z: Z) Reduce the energy consumption of an appliance

Answer: X) X) Convert alternating current to direct current

BONUS energy phrase

When inductors are present in circuits with alternating currents, what type of power do they consume?

Acceptable Answers:

  • REACTIVE

TOSS-UP bio multiple_choice

Which of the following best describes why the xylem is an important plant tissue? W) It transports water and minerals from the roots to the leaves X) It transports water and minerals from the leaves to the roots Y) It is the best part of the plant to eat Z) It gives a plant its strength to stand straight

W: W) It transports water and minerals from the roots to the leaves

X: X) It transports water and minerals from the leaves to the roots

Y: Y) It is the best part of the plant to eat

Z: Z) It gives a plant its strength to stand straight

Answer: W) W) It transports water and minerals from the roots to the leaves

BONUS bio multiple_choice

Your body has approximately one million B cells and ten million different T cells. A gram-negative bacterium enters your body and one of your B cells binds to the bacterium via the BCR recognizing the LPS. Which of the following will happen next? W) The B cell will proliferate X) The virus will enter the B cell Y) Similar T cells will be destroyed Z) The B cell will be destroyed

W: W) The B cell will proliferate

X: X) The virus will enter the B cell

Y: Y) Similar T cells will be destroyed

Z: Z) The B cell will be destroyed

Answer: W) W) The B cell will proliferate

TOSS-UP ess multiple_choice

Given the current climatic conditions on Earth, at which of the following locations would a glacier most likely form? W) 0° latitude at an elevation of 6,000 meters X) 15° N latitude at an elevation of 4,000 meters Y) 30° N latitude at an elevation of 3,000 meters Z) 45° N latitude at an elevation of 1,000 meters

W: W) 0° latitude at an elevation of 6,000 meters

X: X) 15° N latitude at an elevation of 4,000 meters

Y: Y) 30° N latitude at an elevation of 3,000 meters

Z: Z) 45° N latitude at an elevation of 1,000 meters

Answer: W) W) 0° latitude at an elevation of 6,000 meters

BONUS ess multiple_choice

The analysis of which of the following fossil types from ancient vertebrates provides important information about the diet and biota of ancient environments? W) Tracks X) Coprolite Y) Burrows Z) Fulgurite

W: W) Tracks

X: X) Coprolite

Y: Y) Burrows

Z: Z) Fulgurite

Answer: X) X) Coprolite

TOSS-UP phys phrase

What is the SI unit of inductance?

Acceptable Answers:

  • HENRY

BONUS phys multiple_choice

A radioactive element has a half life of 50 seconds. Which of the following is true of a sample of such an element? W) Every atom of the element decays after 50 seconds X) Every atom of the element decays after 100 seconds Y) After 100 seconds, one fourth of the sample has decayed Z) After 100 seconds, three fourths of the sample has decayed

W: W) Every atom of the element decays after 50 seconds

X: X) Every atom of the element decays after 100 seconds

Y: Y) After 100 seconds, one fourth of the sample has decayed

Z: Z) After 100 seconds, three fourths of the sample has decayed

Answer: Z) Z) After 100 seconds, three fourths of the sample has decayed

TOSS-UP math phrase

Give the coordinates of the point where the line \(3x + 2y = 18\) intersects the x axis.

Acceptable Answers:

  • (6, 0)

BONUS math multiple_choice

A jar contains 50 marbles. Exactly 10% are green, 20% are blue, 30% are yellow, and the rest are orange. Which of the following is the probability of randomly picking first a blue marble, replacing it, and then picking an orange marble? W) 1/25 X) 2/25 Y) 3/25 Z) 4/25

W: W) 1/25

X: X) 2/25

Y: Y) 3/25

Z: Z) 4/25

Answer: X) X) 2/25

TOSS-UP chem multiple_choice

Which of the following is NOT a buffering agent? W) Magnesium oxide X) Rubidium hydroxide Y) Ammonia Z) Monopotassium phosphate

W: W) Magnesium oxide

X: X) Rubidium hydroxide

Y: Y) Ammonia

Z: Z) Monopotassium phosphate

Answer: X) X) Rubidium hydroxide

BONUS chem phrase

What is the name of the reaction, commonly used in lecture demonstrations, in which two colorless solutions are mixed, and the liquid turns to a shade of dark blue after a short time delay?

Acceptable Answers:

  • IODINE CLOCK
  • HARCOURT-ESSEN

TOSS-UP bio phrase

What is the common name of the unicellular organism that has the following characteristics: 1) it has chloroplasts and can make its own food; 2) it can also ingest food from its environment; 3) it usually lives in ponds or puddles; 4) it moves by a flagellum; 5) it has an eyespot that detects light.

Acceptable Answers:

  • EUGLENA

BONUS bio multiple_choice

The gram stain can be used to distinguish between different prokaryotes based on which of the following? W) Glucose metabolism X) Flagella Y) Lactose metabolism Z) Cell wall morphology

W: W) Glucose metabolism

X: X) Flagella

Y: Y) Lactose metabolism

Z: Z) Cell wall morphology

Answer: Z) Z) Cell wall morphology

TOSS-UP ess multiple_choice

Which of the following phenomena are responsible for orange and red sunsets? W) Dust particles in the atmosphere X) Ice crystals in the atmosphere Y) Water droplets in the atmosphere Z) Water vapor in the atmosphere

W: W) Dust particles in the atmosphere

X: X) Ice crystals in the atmosphere

Y: Y) Water droplets in the atmosphere

Z: Z) Water vapor in the atmosphere

Answer: W) W) Dust particles in the atmosphere

BONUS ess phrase

Uranus was discovered in 1781. Rounding down to the nearest whole number, how many complete revolutions around the Sun has it made since being discovered?

Acceptable Answers:

  • 2