WVGSA Science 2

Question 1

A student places a plant in a dark closet for two weeks. Which observation would most likely result from this experiment?

Accepted Answer

The plant turns yellow and stops growing

Answer

Without light, plants cannot perform photosynthesis, so they lose chlorophyll (turning yellow) and stop growing.

Question 2

Which of the following best describes a physical change?

Accepted Answer

Ice melting into liquid water

Answer

Ice melting is a physical change because water changes state but its chemical composition (H₂O) remains the same.

Question 3

Earth's tilt on its axis is primarily responsible for which phenomenon?

Accepted Answer

The changing of seasons

Answer

Earth's 23.5° axial tilt causes different parts of Earth to receive varying amounts of sunlight throughout the year, creating seasons.

Question 4

A food web shows that hawks eat snakes, snakes eat frogs, and frogs eat insects. If the insect population suddenly decreases, what would most likely happen to the hawk population?

Accepted Answer

Hawks would eventually decrease due to less food available

Answer

A decrease in insects reduces the food supply for frogs, which reduces snakes, which ultimately reduces the hawk population.

Question 5

Which layer of Earth is responsible for the movement of tectonic plates?

Accepted Answer

Mantle

Answer

Convection currents in the semi-molten mantle drive the movement of tectonic plates on Earth's surface.

(WVGSA) West Virginia General Summative Assessment Practice Test

(WVGSA) West Virginia General Summative Assessment Practice Test

WVGSA Science 2