WVGSA Science

Question 1

What is the chemical formula for water?

Accepted Answer

H2O

Answer

The chemical formula for water is H2O. This formula indicates that each molecule of water is composed of two hydrogen atoms (H) bonded to one oxygen atom (O). It is a fundamental and widely recognized chemical compound essential for all known forms of life.

Question 2

What is the process by which plants make their food?

Accepted Answer

Photosynthesis

Answer

Plants produce their own food through a vital process called photosynthesis. During photosynthesis, plants use sunlight, water, and carbon dioxide to create glucose (sugar) for energy and release oxygen as a byproduct. This process is fundamental to sustaining life on Earth, as it forms the base of most food chains.

Question 3

What is the primary source of energy for the Earth?

Accepted Answer

The Sun

Answer

The Sun is the primary and most significant source of energy for Earth. Its radiant energy, in the form of sunlight, drives nearly all natural processes, including photosynthesis in plants, weather patterns, and the water cycle. This solar energy is ultimately responsible for sustaining life and powering most ecosystems on our planet.

Question 4

What is the boiling point of water at sea level?

Accepted Answer

100°C

Answer

At standard atmospheric pressure, which is typically found at sea level, the boiling point of pure water is 100 degrees Celsius (°C). At this temperature, water transitions from a liquid to a gaseous state (steam). This is a fundamental physical property of water.

Question 5

What is the most abundant gas in Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Nitrogen is the most abundant gas in Earth's atmosphere, making up approximately 78% of its total volume. While oxygen is crucial for respiration, nitrogen plays a significant role in various biological and atmospheric processes. It is a relatively inert gas but essential for life through the nitrogen cycle.

(WVGSA) West Virginia General Summative Assessment Practice Test

(WVGSA) West Virginia General Summative Assessment Practice Test

WVGSA Science