CBA 2 Review - 8th Grade Science- 2024/2025

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. It typically involves observation, hypothesis formulation, experimentation, and conclusion.

Tags

NGSS.MS-PS1-2

Front

Define 'hypothesis'.

Back

A testable prediction about the relationship between two or more variables.

Front

What is a variable in an experiment?

Back

Any factor, trait, or condition that can exist in differing amounts or types. Variables can be independent, dependent, or controlled.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

Front

Explain the difference between independent and dependent variables.

Back

The independent variable is the one that is changed or controlled in a scientific experiment to test its effects on the dependent variable, which is the variable being tested and measured.

Tags

NGSS.MS-PS2-2

Front

What is a control group?

Back

A group in an experiment that does not receive the treatment and is used as a benchmark to measure how the other tested subjects do.

Front

What is the purpose of a scientific experiment?

Back

To test a hypothesis by collecting data and analyzing the results to draw conclusions.

Tags

NGSS.MS-LS1-5

NGSS.MS-PS1-2

Front

Define 'ecosystem'.

Back

A community of living organisms interacting with their physical environment.

Front

What is photosynthesis?

Back

The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Tags

NGSS.MS-LS1-6

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants, create their own food through photosynthesis and serve as a primary energy source for other organisms.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

Define 'food chain'.

Back

A linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Tags

NGSS.MS-LS2-3