GED Science Test #4 3

Question 1

The pH of a substance is 3. This substance is:

Accepted Answer

Acidic

Answer

Basic

Answer

Neutral

Answer

Alkaline

Question 2

Which layer of Earth's atmosphere contains the ozone layer?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 3

A food web shows: grass → grasshopper → frog → snake → hawk. If the frog population suddenly declines, what would most likely happen to the grasshopper population?

Accepted Answer

Increase

Answer

Decrease

Answer

Stay the same

Answer

Go extinct immediately

Question 4

Which of Newton's laws states that an object at rest stays at rest unless acted upon by a net external force?

Accepted Answer

First Law (Law of Inertia)

Answer

Second Law (F = ma)

Answer

Third Law (Action-Reaction)

Answer

Law of Universal Gravitation

Question 5

During photosynthesis, plants convert:

Accepted Answer

Carbon dioxide and water into glucose and oxygen

Answer

Oxygen and glucose into carbon dioxide and water

Answer

Sunlight directly into food energy

Answer

Nitrogen and water into protein

Question 6

A bar graph shows the following data: City A = 18°C average temperature; City B = 24°C. City B is located closer to the equator. Which inference is best supported?

Accepted Answer

Proximity to the equator is associated with higher average temperatures

Answer

City A has a colder climate due to elevation

Answer

Temperature differences are caused by ocean currents

Answer

Both cities receive the same amount of sunlight