ES Chapter 1 Vocabulary Practice

Fill in the blank: __________ is something that happens in the natural world that we can see, notice, or measure and that scientists try to understand or explain.

• phenomenon

• hypothesis

• experiment

• laboratory

Fill in the blank: __________ explains why or how something happens, based on lots of evidence and repeated testing.

• theory

• guess

• hypothesis

• opinion

Fill in the blank: __________ describes what happens under certain conditions, often written as a formula or rule, doesn’t explain why.

• law

• theory

• hypothesis

• model

Fill in the blank: __________ is a basic rule or idea that is widely accepted and often used to build other ideas, can be part of a theory or law or stand alone.

• principle

• experiment

• variable

• hypothesis

Fill in the blank: __________ is a group of parts that work together to form a whole and carry out a function or process by way of a driving force.

• system

• element

• substance

• mixture

What is the term for 'systems where both energy and matter flow in and out'?

• open system

• closed system

• isolated system

• dynamic system

What is the term for 'a system where only energy can flow in and out (not matter)'?

• closed system

• open system

• isolated system

• dynamic system

What is the term for 'a simplified representation of something in the natural world that helps scientists understand, explain, or predict how it works'?

• model

• theory

• experiment

• variable

What is the term for 'Measurable; data using numbers'?

• quantitative data

• qualitative data

• subjective data

• descriptive data

What is the term for 'Descriptive data using words'?

• qualitative data

• quantitative data

• numerical data

• statistical data