Grade 5 Science Standards Review

What is an ecosystem?

• A single species and its environment

• A community of living organisms and their physical environment

• A collection of planets and stars

• A type of animal habitat

Answer explanation

An ecosystem is a community of living organisms and their physical environment, highlighting the correct choice.

Which of the following is an example of energy transfer in an ecosystem?

• A rock sitting on the ground

• A plant using sunlight to make food

• A cloud moving across the sky

• A refrigerator cooling food

Answer explanation

The correct choice is 'A plant using sunlight to make food' because it exemplifies energy transfer in an ecosystem through photosynthesis.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are the four main Earth systems?

• Atmosphere, Hydrosphere, Biosphere, Geosphere

• Atmosphere, Lithosphere, Biosphere, Cryosphere

• Hydrosphere, Biosphere, Cryosphere, Mantle

• Atmosphere, Hydrosphere, Lithosphere, Ecosphere

Answer explanation

The correct answer is Atmosphere, Hydrosphere, Biosphere, Geosphere, as these are the four main Earth systems that interact and influence each other.

What causes weather patterns?

• The movement of celestial bodies

• The Earth's rotation on its axis

• The interaction of the Earth's atmosphere with the sun's energy

• The Earth's magnetic field

Answer explanation

Weather patterns are caused by the interaction of the Earth's atmosphere with the sun's energy.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which human body system is responsible for transporting oxygen and nutrients to cells?

• Digestive system

• Circulatory system

• Respiratory system

• Nervous system

Answer explanation

The circulatory system is responsible for transporting oxygen and nutrients to cells through the blood vessels, making it the correct choice.

What is a producer in an ecosystem?

• An animal that eats plants

• A plant that makes its own food

• An animal that eats other animals

• A decomposer that breaks down dead organisms

Answer explanation

A producer in an ecosystem is a plant that makes its own food through photosynthesis, converting sunlight into energy.

Tags

NGSS.MS-LS2-3

How does the water cycle contribute to Earth's systems?

• By transporting nutrients through the atmosphere

• By providing energy for the Earth's rotation

• By moving water between the Earth's surface and atmosphere

• By changing the composition of the Earth's crust

Answer explanation

The water cycle contributes to Earth's systems by moving water between the Earth's surface and atmosphere, facilitating various processes and maintaining balance.

Tags

NGSS.MS-ESS2-4

What is the primary function of the respiratory system?

• To digest food

• To circulate blood

• To exchange gases in the body

• To control body movements

Answer explanation

The primary function of the respiratory system is to exchange gases in the body, such as oxygen and carbon dioxide.

Which of the following is a renewable energy source?

• Coal

• Natural gas

• Solar energy

• Nuclear energy

Answer explanation

Solar energy is a renewable energy source because it is derived from the sun's radiation, which is a virtually inexhaustible resource.

What role do decomposers play in an ecosystem?

• They produce oxygen through photosynthesis

• They consume living plants and animals

• They break down dead organisms and recycle nutrients

• They regulate the temperature of the ecosystem

Answer explanation

Decomposers play a crucial role in an ecosystem by breaking down dead organisms and recycling nutrients back into the environment.

Tags

NGSS.MS-LS2-3