STAAR Grade 5: Science

Question 1

What is the process by which plants make their own food using sunlight?

Accepted Answer

Photosynthesis

Answer

Photosynthesis is the process plants use to convert sunlight, water, and carbon dioxide into food (glucose) and oxygen.

Question 2

Which layer of Earth is made of liquid rock called magma?

Accepted Answer

Outer core

Answer

The outer core is made of liquid iron and nickel, while the mantle contains magma (molten rock).

Question 3

What type of rock forms when magma cools and hardens?

Accepted Answer

Igneous

Answer

Igneous rock forms when magma or lava cools and solidifies.

Question 4

What happens to water when it evaporates?

Accepted Answer

It turns into water vapor

Answer

Evaporation is the process where liquid water changes into water vapor (gas) as it absorbs heat energy.

Question 5

Which adaptation helps a cactus survive in the desert?

Accepted Answer

Thick waxy skin to store water

Answer

Cacti have thick, waxy stems that store water, helping them survive long periods without rain.

STAAR Practice Test