PAX PAX Earth Science 3

Question 1

What is the primary cause of ocean tides on Earth?

Accepted Answer

The gravitational pull of the Moon and Sun

Answer

Ocean tides are primarily caused by the Moon's gravitational pull, with the Sun also contributing a significant but smaller effect.

Question 2

What is humus in the context of soil science?

Accepted Answer

Decomposed organic matter in soil

Answer

Humus is the dark, stable organic component of soil formed by the decomposition of plant and animal matter, improving soil fertility and water retention.

Question 3

What is an aquifer?

Accepted Answer

An underground layer of permeable rock saturated with water

Answer

An aquifer is a body of permeable rock or sediment saturated with groundwater that can be extracted through wells for drinking or irrigation.

Question 4

What type of energy is generated by harnessing heat from within the Earth?

Accepted Answer

Geothermal energy

Answer

Geothermal energy harnesses heat from Earth's interior—often through steam from geysers or hot springs—to generate electricity or heat buildings.

Question 5

What is the key difference between weathering and erosion?

Accepted Answer

Weathering breaks down rock in place; erosion transports the material

Answer

Weathering is the in-place breakdown of rock by physical or chemical processes, while erosion is the transport of that broken material by agents such as water, wind, or ice.

PAX Exam Practice Test

PAX Exam Practice Test

PAX PAX Earth Science 3