Scientific Methods

This variable in an experiment is deliberately changed by the scientist.

• dependent variable

• independent variable

• data

• control group

There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?

• quantitative
• qualitative

Tags

NGSS.MS-PS3-1

There are two types of data. Which type of data involves descriptions that cannot be counted or measured?

• qualitative
• quantitative

The part of the experiment that remains the same for the control and experimental group.

• constants
• control
• independent
• dependent

Mr. S. sets up an experiment to see how far three balls with different masses roll off a ramp. Identify the independent variable.

• distance traveled by the ball

• height of the ramp

• mass of the ball

• weight of the ball

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and liquid. What is the dependent variable?

• Type of plant

• type of liquid

• Plant growth

• Color of the plant's leaves

Every good experiment has ____ independent variable(s).

• 1

• 2

• 3

• 4

A scientific ____________ is a statement that describes what always happens under certain conditions in nature.

• law
• theory
• method
• variable

Tags

NGSS.HS-PS2-1

A series of steps used by scientists to solve a problem or answer a question. 

• scientific method
• experiment
• data collection
• metric system

A possible explanation to a problem that has not yet been tested. 

• data
• theory
• hypothesis
• fact