Science Olympiads

What is the main function of the human circulatory system?

• To transport blood and essential substances throughout the body.

• To digest food and absorb nutrients.

• To regulate body temperature and produce hormones.

• To filter waste products from the blood.

Name the primary producers in a food chain.

• Decomposers like earthworms

• Carnivorous plants

• Fungi and bacteria

• Plants and algae

Tags

NGSS.MS-LS2-3

What is the process called when a solid turns into a liquid?

• Condensation

• Freezing

• Sublimation

• Melting

Tags

NGSS.MS-PS1-4

What is Newton's first law of motion?

• An object will accelerate unless a force is applied.

• An object will change direction only when a force is applied.

• An object will remain in motion only if it is in a vacuum.

• An object will remain at rest or in uniform motion unless acted upon by an external force.

How do plants obtain energy from the sun?

• Plants obtain energy from the sun through photosynthesis.

• Plants get energy by consuming soil nutrients.

• Plants harness energy from water absorption.

• Plants absorb energy through respiration.

Tags

NGSS.MS-LS1-6

What role do decomposers play in a food chain?

• Decomposers compete with herbivores for resources.

• Decomposers produce energy for consumers.

• Decomposers recycle nutrients and support the growth of producers in a food chain.

• Decomposers are the primary producers in a food chain.

Tags

NGSS.MS-LS2-3

What is the difference between a physical change and a chemical change?

• Physical changes do not change the substance's chemical identity, while chemical changes do.

• Chemical changes can be reversed easily, while physical changes cannot.

• Physical changes involve a change in temperature, while chemical changes do not.

• Physical changes result in new substances, while chemical changes do not.

Tags

NGSS.MS-PS1-4

What is the function of the human respiratory system?

• To digest food and absorb nutrients.

• The function of the human respiratory system is to exchange gases (oxygen and carbon dioxide) between the body and the environment.

• To circulate blood throughout the body.

• To produce hormones for growth and development.

How does energy flow through a food chain?

• Energy flows from producers to consumers in a food chain, with energy loss at each trophic level.

• Energy is recycled within each trophic level.

• Energy flows only from consumers to producers.

• Energy is lost only at the producer level.

Tags

NGSS.MS-LS2-3

What is the law of conservation of mass?

• Mass is conserved in chemical reactions; it cannot be created or destroyed.

• Mass can be destroyed during a reaction.

• Mass is only conserved in physical changes.

• Mass can be created in chemical reactions.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5