ASVAB General Science Practice Test 320257 Results

Your Results Global Average
Questions 5 5
Correct 0 3.07
Score 0% 61%

Review

1

The formula for acceleration is which of the following?

56% Answer Correctly

\(\vec{a} = { m \over \vec{F} }\)

\(\vec{a} = { m \over F }\)

\(\vec{a} = { \vec{F} \over m }\)

\(\vec{a} = \vec{F} m\)


Solution

Newton's second law of motion leads to the formula for acceleration which is a measure of the rate of change of velocity per unit time and, if you solve for positive acceleration, reveals how much net force is needed to overcome an object's mass.  The formula for acceleration is  \(\vec{a} = { \vec{F} \over m }\) or, solving for force,  \(\vec{F} = m\vec{a}\).


2

The asteroids in the Kuiper belt are composed of which of the following?

61% Answer Correctly

gaseous methane, ammonia, and water

minerals

frozen methane, ammonia, and water

rock


Solution

The Kuiper Belt is similar to the asteroid belt but much larger. Extending beyond the orbit of Neptune, it contains objects composed mostly of frozen methane, ammonia, and water. Most notably, the Kuiper Belt is home to Pluto, a dwarf planet that, until a 2006 reclassification, was considered the ninth planet of the solar system.


3

Changes to an object's speed or direction of motion are caused by which of the following?

72% Answer Correctly

work

power

kinetic energy

a force


Solution

Force is applied to change an object's speed or direction of motion.


4

Which of the following represents the largest value?

61% Answer Correctly

1 kL

1 cL

1 mL

1 ML


Solution

Mega (M) is 106, kilo (k) is 103, centi (c) is 10-2, milli (m) is 10-3 so 1 ML represents the largest value.


5

Which of the following is related to the Cambrian Explosion?

58% Answer Correctly

fossil record

extinction of dinosaurs

carbon dating

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.