ASVAB Practice Test: Video 1 Answers (25 Questions) Flashcards

Which of the following numbers is divisible by 3?\t

Answer: 85,019,457

A number is divisible by 3 if the sum of its digits is divisible by 3. For 85,019,457, the sum of its digits is 8+5+0+1+9+4+5+7 = 39. Since 39 is divisible by 3 (39 ÷ 3 = 13), the original number 85,019,457 is also divisible by 3.

What should come next in the following sequence? 64a, 55b, 46c, 37d, 28e, ?

Answer: 5 years 4 months

The pattern is descending increments of 9 followed by the first letter, second letter, third letter, and so on.\r\n

If y + 3y + 5y = −18, then what is the value of y?

Answer: −2

First, combine the like terms on the left side of the equation: y + 3y + 5y simplifies to 9y. The equation then becomes 9y = -18. To solve for y, divide both sides of the equation by 9. This gives y = -18 / 9, which results in y = -2.

The sum of 7 numbers is greater than 140 and less than 210. Which of the following could be the average (arithmetic mean) of the numbers?

Answer: 26

The average (arithmetic mean) of a set of numbers is their sum divided by the count of numbers. Given that the sum of 7 numbers is greater than 140 and less than 210, the average must be between 140/7 and 210/7. This means the average must be greater than 20 and less than 30. Of the given options, only 26 falls within this range.

If b does not equal zero, and ab = b/4, what is the value of a?

Answer: 1/4

To find the value of 'a', we need to isolate 'a' in the given equation `ab = b/4`. Since 'b' does not equal zero, we can divide both sides of the equation by 'b'. This simplifies the equation to `a = (b/4) / b`, which further reduces to `a = 1/4`.

What is the genetic material found in the nucleus of a eukaryotic cell?

Answer: DNA

Deoxyribonucleic acid (DNA) is the hereditary material housed in the nucleus, encoding the genetic instructions for all cellular functions and traits.

Which of the following are NOT decomposers?

Answer: vultures

Decomposers are organisms that break down dead organic matter, recycling nutrients back into the ecosystem. Bacteria and fungi are primary decomposers, and earthworms are detritivores that contribute to decomposition. Vultures, however, are scavengers; they consume dead animals but do not break down organic matter at a molecular level like true decomposers.

What type of rock forms from the cooling and solidification of magma or lava?

Answer: Igneous

Igneous rocks form when molten rock (magma underground or lava at the surface) cools and solidifies; granite and basalt are common examples.

Which of the following is an example of a chemical change rather than a physical change?

Answer: Burning wood

Burning wood is a chemical change because new substances (ash, carbon dioxide, water vapor) are formed with different properties.

Which of these planets is located farthest from the sun?

Answer: Neptune

The planets in our solar system, in order of increasing distance from the sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Among the given options, Neptune is the eighth and farthest known planet from the sun. Therefore, it is located farthest from the sun.

At minimum, how many pulleys are there in a block and tackle system?

Answer: Two

A block and tackle system is a combination of pulleys and ropes used to lift heavy loads with less force. To achieve this mechanical advantage, the system requires at least two pulleys. Typically, one pulley is fixed to a support, and at least one other pulley is movable, attached to the load.

A ratchet mechanism allows motion in one direction only. What component prevents reverse rotation?

Answer: Detent pawl

The pawl engages the ratchet wheel's teeth to block rotation in the reverse direction.

Which class of lever has the fulcrum located between the effort and the load?

Answer: First class

A first-class lever (like a seesaw or crowbar) has the fulcrum between effort and load.

Which type of stress acts parallel to the cross-section of a material, causing layers to slide?

Answer: Shear stress

Shear stress acts parallel to a surface, causing adjacent material layers to slide relative to each other.

One horsepower is equivalent to

Answer: 746 watts

Horsepower (hp) is a traditional unit of power, commonly used to rate engines and motors, while watts (W) are the standard unit of power in the International System of Units (SI). The conversion factor between these two units is a widely accepted standard. Specifically, one horsepower is precisely equivalent to 746 watts.

Y2-49 = 0. Y could equal:

Answer: 7

The equation Y² - 49 = 0 can be solved by adding 49 to both sides, resulting in Y² = 49. To find Y, take the square root of both sides. The square root of 49 is 7, so Y could equal 7 (or -7, but 7 is the only positive option provided).

If a square is cut in half across its diagonal, the formed triangles will have angles of:

Answer: 45-45-90

When a square is cut in half across its diagonal, it forms two congruent right-angled triangles. Since all angles in a square are 90 degrees and the diagonal bisects two of these angles, the two non-right angles in each triangle will be 45 degrees. Thus, the formed triangles are 45-45-90 right triangles.

What is the area of an isosceles right triangle that has one leg that measures 4 cm?

Answer: 8 cm

An isosceles right triangle has two equal legs and a right angle. If one leg measures 4 cm, the other leg also measures 4 cm. The area of a right triangle is (1/2) * base * height. In this case, both the base and height are 4 cm, so the area is (1/2) * 4 cm * 4 cm = 8 cm².

If a circle has a diameter of 1.5 feet, what is its circumference?

Answer: 1.5 π

The circumference of a circle is calculated using the formula C = πd, where 'd' is the diameter. Given that the diameter is 1.5 feet, substitute this value into the formula. Therefore, the circumference is 1.5π feet.

Calculate the area of a parallelogram with a base of 3 feet and a height of 1.2 feet.

Answer: 3.6 square feet

The area of a parallelogram is calculated by multiplying its base by its height. Given a base of 3 feet and a height of 1.2 feet, the area is 3 feet * 1.2 feet. This calculation results in an area of 3.6 square feet.