ASVAB General Science: Earth Science and Space Science

Question 1

Which layer of Earth's atmosphere contains the ozone layer and is where most weather patterns occur just below it?

Accepted Answer

Stratosphere

Answer

The ozone layer sits within the stratosphere (roughly 15–35 km altitude). Weather occurs in the troposphere below it, but the ozone layer itself is in the stratosphere.

Question 2

What is the correct order of the rock cycle stages when magma cools and eventually becomes sedimentary rock?

Accepted Answer

Magma → igneous → weathering/erosion → sediment → sedimentary rock

Answer

Magma cools to form igneous rock. Weathering and erosion break igneous rock into sediment, which compacts and cements into sedimentary rock over time.

Question 3

Ocean tides are primarily caused by which force?

Accepted Answer

The gravitational pull of the Moon (and to a lesser extent, the Sun)

Answer

The Moon's gravity pulls ocean water toward it, creating a tidal bulge. The Sun also contributes, and when Sun, Earth, and Moon align (spring tides) the effect is strongest.

Question 4

On the Mohs hardness scale, which mineral is rated 10 (the hardest)?

Accepted Answer

Diamond

Answer

Diamond is rated 10 on the Mohs scale, making it the hardest naturally occurring mineral. Corundum is 9, Topaz is 8, and Quartz is 7.

Question 5

Which planet in our solar system has the most moons?

Accepted Answer

Saturn

Answer

Saturn currently holds the record with over 140 confirmed moons, surpassing Jupiter. Both are gas giants with large moon systems, but Saturn's count is higher.

ASVAB - Armed Services Vocational Aptitude Battery Practice Test

ASVAB - Armed Services Vocational Aptitude Battery Practice Test

ASVAB General Science: Earth Science and Space Science