ASVAB General Science Practice Test 267921 Results

Your Results Global Average
Questions 5 5
Correct 0 3.37
Score 0% 67%

Review

1

In the pancreas, lipase converts fat to:

64% Answer Correctly

amino acids

glycerol and fatty acids

simple sugars

complex carbohydrates


Solution

The acids produced by the pancreas contain several enzymes that aid in digestion.  Lipase converts fat to glycerol and fatty acids. Pancreatic amylase breaks down complex carbohydrates into simple sugars. Trypsin converts polypeptides (the building blocks of protein) into amino acids.


2

Which of the following is related to the Cambrian Explosion?

58% Answer Correctly

carbon dating

fossil record

extinction of dinosaurs

first civilizations


Solution

The Cambrian period is one of the most significant geological time periods. Lasting about 53 million years, it marked a dramatic burst of changes in life on Earth known as the Cambrian Explosion. It is from this period that the majority of the history of life on Earth, as documented by fossils, is found. Called the fossil record, the layering of these mineralized imprints of organisms preserved in sedementary rock have allowed geologists to build a historical record of plant and animal life on Earth.


3

212°F is how many °C?

78% Answer Correctly

0

-100

\(135 {5 \over 9}\)

100


Solution

The formula to convert from F° to C° is:

\(C° = {5 \over 9} (F° - 32)\)

plugging in our values gives:

\(C° = {5 \over 9} (212 - 32)\)

\(C° = {5 \over 9} (180) = {{180 \times 5} \over 9}\)

\(C° = {900 \over 9}\)

\(C° = 100\)


4

Which of the following is not true of light waves?

62% Answer Correctly

are electromagnetic waves

are mechanical waves

travel faster than sound waves

can travel through a vacuum


Solution

Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.


5

Vector quantities are fully described by which of the following?

75% Answer Correctly

a magnitude and a direction

a direction only

a magnitude only

a direction and a polarity


Solution

Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction.  In contrast, scalar quantities are quantities that are fully described by a magnitude only.  A variable indicating a vector quantity will often be shown with an arrow symbol:  \(\vec{v}\)