MCAS 8th Grade Science Review (2016)

Front

What is the climate difference between coastal cities and inland cities?

Back

Coastal cities, like City Y, typically have cooler summers and milder winters compared to inland cities, like City Z, due to the influence of the ocean.

Front

What role does a perch play in an energy pyramid?

Back

The perch is a secondary consumer, meaning it feeds on primary consumers and is part of the food chain.

Front

What is the primary material that makes up Earth's core?

Back

The Earth's core is primarily composed of iron.

Front

What does the law of conservation of mass state?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it remains constant.

Front

What is a universal systems model?

Back

A universal systems model is a framework used to analyze and solve problems by gathering data, receiving input, implementing solutions, and evaluating results.

Front

What is a secondary consumer?

Back

A secondary consumer is an organism that eats primary consumers in a food chain.

Front

What is the significance of elevation in climate?

Back

Elevation affects climate; higher elevations generally have cooler temperatures compared to lower elevations.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an energy pyramid?

Back

An energy pyramid is a graphical representation of the energy flow in an ecosystem, showing the energy available at each trophic level.

Front

What is the role of producers in an ecosystem?

Back

Producers, like plants, convert sunlight into energy through photosynthesis and form the base of the food chain.