Science test for 9/18

Scientific Method

the method of discovery used by scientists

Observation

an act or instance of noticing or perceiving

Inference

a conclusion reached on the basis of evidence and reasoning

Qualitative data

data representing information and concepts that are not represented by numbers

Quantitative data

information that can be counted or measured and expressed as a numerical value

Engineering Design Process

method engineers use to solve problems by first understanding the problem, then brainstorming and designing solutions( doesn’t have to be step by step )

Constraints

a limit or restriction

Variable

a symbol or a characteristic that can change or take on different values

Independent variable

what you can change in an investigation

Dependent variable

Can be tested to provide evidence for or against the statement

Controlled variable

what you measure in your investigation

Hypothesis

A scientific prediction that can be tested

Experiment

a controlled procedure designed to test a hypothesis( usually trails)

Inquiry Question

A question that guides your research or investigation to learn more about a topic.

Attraction

A force that pulls objects toward each other.

Cohesion

The force that holds molecules of the same substance together or the action or fact of sticking together or being united.

Surface Tension

The force on the surface of a liquid that makes it behave like a stretched elastic skin.

interval

The amount of space, time, or measurement between two points or events.

scale

A system or tool used to measure or compare size, amount, or distance.

X-axis

The horizontal line on a graph used to show values of the independent variable.

Y-axis

The vertical line on a graph where you usually plot the dependent variable or the output values.

natural phenomena

Events or processes that happen in nature without human involvement.