The line graph shows five years of data about a dog. What information does the graph show? (Click the graph to see it larger.)

• How the mass of the dog changed.

• How much food the dog consumed.

• What kinds of food the dog consumed.

• When the dog was measured each month.

What is the SI metric unit of measurement that is used to record the heat transfer of a solution in a classroom investigation?

• Liter

• Newton

• Volt

• Degree Celsius

Tags

NGSS.MS-PS1-4

The data table shows the results of an investigation. What information should be used for the column headings marked "X"? (Click the picture to see the diagram enlarged.)

• Trial Number

• Number of Seeds

• Predicted value for the results.

• Average of the data in each column.

Tags

NGSS.MS-LS2-1

A student predicts that similar ice cubes will melt faster in a microwave than in a pot on the stove. How should this hypothesis be tested?

• Measure and compare the volume of the pot and the microwave.

• Determine the volume of liquid water made by each ice cube.

• Observe and record the time for each ice cube to completely change to liquid.

• Identify and record the temperature of each ice cube before each trial.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Students conducted an investigation to determine if unknown liquids were acids or bases. What was the independent variable in this investigation?

• Sample

• Indicator

• Color Change

• Identification

Tags

NGSS.MS-PS1-2

If friction increases, then the rolling distance of a marble will decrease. What should be changed to best test this hypothesis?

• Height of the ramp.

• Height and length of the ramp.

• Roughness of the ramp surface.

• Height of the ramp and roughness of the ramp surface.

Tags

NGSS.MS-PS2-2

A student recorded the temperature of an aquarium each hours, for 8 hours. Which of these will best display the data the student collected?

• Bar Graph

• Circle Graph

• Picture Graph

• Line Graph

A student measured the power of a motor operating at different temperatures. The student recorded a total of 11 measurements, one at each 2 degree interval between 10°C and 30°C. Which change in the procedure would most improve the validity of conclusions based on this investigation?

• Increasing the number of variables.

• Decreasing the range of the independent variable.

• Repeating the experiment several times.

• Producing a graph of numerical observations.

Which of these represents the freezing point of water in correct SI units?

• 0°C

• 0°F

• 32°F

• -273°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Students measured the amount of an unknown substance that dissolved in water at different temperatures. What was the independent variable in this investigation?

• Amount of substance dissolved

• Unknown substance used

• Water temperature

• Water volume

Tags

NGSS.MS-PS1-4