Which task would require the use of a meter stick and a stopwatch?

• measuring the growth of a plant

• determining how fast a toy car rolls down a tamp

• recording the results of mixing two liquids

• creating a model of the solar system

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Scientists perform many trials for each experiment because

• they want to improve their public image

• they want to improve the reliability of the results

• they have to rewrite the hypothesis

• they have to decide how to publish the data

Tags

NGSS.MS-LS1-5

Diagrams, photos, and tables are used by scientists during experimentation to

• define the independent and dependent variables

• predict the independent variable

• test a hypothesis

• record data

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

The volume of water and an egg in a graduated beaker is 200 mL. After the egg is removed, the volume of the water is found to be 125 mL. What is the volume of the egg in cm3?

• 325 mL

• 25 cm3

• 75 cm3

• 150 cm3

Data were collected during an investigation of copper metal. Which of the observations is an opinion?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-2

The scientific method is the way that scientists answer questions and solve problems in investigations. Steps for performing an investigation are illustrated.

Instructions are missing in the third step. Which of these should fill in the missing step?

• Make Observations

• Rephrase the Problem

• Add Another Question

• Construct a Hypothesis

Which of the following belong at "X" on the table?

• liquid

• volume

• weight

• pressure

What is the best label for Column Z?

• Unit

• Instrument

• Dimension

• Tool

What is the best label for Column Y?

• Unit

• Instrument/ tool

• symbol

• variable

Refer to the diagram. What is the correct measurement for instrument B?

• - 2.5 ºC

• – 2 ºC

• – 8.5 ºC

• - 1.5 °C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4