CAASPP Science 2

Question 1

A student observes that a dropped ball accelerates downward and then hits the ground. Which force is primarily responsible for this acceleration?

Accepted Answer

Gravity

Answer

Gravity is the attractive force between Earth and the ball that causes it to accelerate downward at approximately 9.8 m/s².

Question 2

During photosynthesis, plants convert light energy into chemical energy stored in which molecule?

Accepted Answer

Glucose

Answer

Plants use light energy to convert carbon dioxide and water into glucose (C₆H₁₂O₆), storing energy in its chemical bonds.

Question 3

Which of the following best describes a physical change?

Accepted Answer

Ice melting into liquid water

Answer

Melting ice is a physical change because only the state of matter changes; the chemical composition of water (H₂O) remains the same.

Question 4

The rock cycle describes how rocks change over time. Which process transforms igneous rock into sedimentary rock?

Accepted Answer

Weathering, erosion, and compaction

Answer

Igneous rock is broken down by weathering and erosion into sediments, which are then compacted and cemented to form sedimentary rock.

Question 5

A food web shows the feeding relationships in an ecosystem. What happens to the population of rabbits if all the foxes are removed from the ecosystem?

Accepted Answer

Rabbit population initially increases due to less predation

Answer

Without fox predation, the rabbit population would initially increase rapidly, though this could later cause resource depletion and population crash.

CAASPP - California Assessment of Student Performance and Progress Practice Test

CAASPP - California Assessment of Student Performance and Progress Practice Test

CAASPP Science 2