Grade 9 Knowledge Assessment

Азаматтық құық термині

• Ежелгі рим заңынан

• Ежелгі грекиядан

• Ежелгі ундістаннан

Explain the significance of the water cycle.

• The water cycle is significant because it sustains ecosystems, regulates climate, and provides freshwater resources.

• The water cycle has no impact on weather patterns.

• The water cycle is primarily a human-made process.

• The water cycle is only important for agriculture.

What are the three states of matter?

• solid, liquid, plasma

• plasma, vapor, foam

• solid, liquid, gas

• gas, liquid, crystal

Define the term 'ecosystem'.

• A type of weather pattern.

• A collection of plants in a garden.

• A group of unrelated animals living in isolation.

• An ecosystem is a community of living organisms and their physical environment interacting as a system.

What is the main function of the heart?

• To produce hormones for digestion.

• To filter toxins from the blood.

• To pump blood throughout the body.

• To regulate body temperature.

Describe the process of photosynthesis.

• Photosynthesis occurs only at night when plants absorb carbon dioxide.

• Photosynthesis produces only carbon dioxide and water as byproducts.

• Photosynthesis is the process by which plants convert light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water.

• Photosynthesis is the process of converting chemical energy into light energy.

What is the difference between speed and velocity?

• Speed is scalar; velocity is vector (includes direction).

• Speed includes direction, while velocity does not.

• Velocity measures distance only.

• Speed is a type of velocity.

Identify the main components of a cell.

• Cell wall, chloroplasts, vacuoles

• Plasma, blood cells, platelets

• Nerve endings, synapses, neurotransmitters

• Cell membrane, cytoplasm, nucleus, mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus.

What is the law of supply and demand?

• The law of supply and demand is a theory that prices are fixed regardless of market conditions.

• The law of supply and demand states that supply always exceeds demand.

• The law of supply and demand is the principle that prices are determined by the relationship between supply and demand.

• The law of supply and demand indicates that higher prices lead to lower demand and higher supply.

Explain the concept of democracy.

• Democracy is a system where a single ruler makes all decisions.

• Democracy is a form of government where laws are made by a small group of elites.

• Democracy means that citizens have no role in government.

• Democracy is a government system where the people have the authority to choose their representatives and influence legislation.