Science STAAR Review

What is a renewable resource?

• A natural resource that can be replenished naturally over time, such as solar energy.

• A resource that is finite and cannot be replaced once used, like fossil fuels.

• A resource that is artificially created and cannot be found in nature, such as plastic.

• A resource that is only available in certain locations and cannot be transported, like diamonds.

What process do plants use to convert sunlight into chemical energy?

• Respiration

• Photosynthesis

• Transpiration

• Fermentation

What is the first step in the scientific method?

• Ask a question or identify a problem.

• Form a hypothesis.

• Conduct an experiment.

• Analyze the results.

What is the role of producers in an ecosystem?

• Producers create their own food through photosynthesis and provide energy for consumers.

• Producers consume other organisms for energy.

• Producers decompose organic matter and recycle nutrients.

• Producers regulate the population of consumers in an ecosystem.

What is the significance of the sun in an ecosystem?

• The sun provides energy for photosynthesis, which is the foundation of most food chains.

• The sun regulates the temperature of the Earth, preventing extreme weather conditions.

• The sun is essential for the formation of soil and minerals in the ecosystem.

• The sun acts as a source of light for nocturnal animals.

How is energy transferred in a food chain?

• Through the consumption of organisms by other organisms.

• Through photosynthesis in plants.

• By the movement of energy waves.

• Through the decomposition of organic matter.

Which of the following is an abiotic factor in an ecosystem?

• Sunlight.

• Trees.

• Animals.

• Bacteria.

What are the three states of matter?

• Solid, liquid, and gas.

• Solid, liquid, and plasma.

• Solid, gas, and vapor.

• Liquid, gas, and steam.

What is the function of roots in plants?

• Roots anchor the plant and absorb water and nutrients from the soil.

• Roots primarily serve as a storage organ for carbohydrates.

• Roots are responsible for photosynthesis in plants.

• Roots help in the reproduction of plants.

What is gravity?

• A force that repels two bodies away from each other.

• A force that attracts two bodies toward each other, affecting their motion.

• A type of energy that allows objects to float.

• A phenomenon that occurs only on Earth.