If a student was conducting a lab how electric current affects the heat produced in an oven, which of the following hypotheses would be BEST for them to use?

• If electric current increases, then an oven will turn on faster.

• If electric current decreases, then an oven will produce less heat.

• If the heat of an oven increased, then a cake will cook faster.

• If the heat of an oven is decreased, then voltage will decrease.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

An investigation on how the length of an electric circuit affects electric current is conducted.

Which of the following would be the INDEPENDENT VARIABLE?

• Electric Current

• Circuit length

• Type of wire

• Power Source

An investigation on how the length of an electric circuit affects electric current is conducted.

Which of the following would be the DEPENDENT VARIABLE?

• Electric Current

• Circuit length

• Type of wire

• Power Source

An investigation on how the length of an electric circuit affects electric current is conducted.

Which of the following would be the CONTROL VARIABLES?

There is more than one right answer.

• Electric Current

• Circuit length

• Type of wire

• Power Source

In an experiment on how compasses react to changes to an electromagnet, which of the following materials would be needed?

There is more than one right answer.

• Battery

• Compasses

• Permanent Magnet

• Wire

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In an investigation on how the number of permanent magnets affects a compass, which of the following would be a good first step to complete?

• Repeat this process for 5 and 7 magnets.

• Record how fast the compass needle moves after the permanent magnets are place nearby.

• Place the permanent magnets 4 centimeters away from a compass

• Stack the 3 permanent magnets together.

Tags

NGSS.MS-PS2-5

The title of a graph is located....

• At the bottom of the graph

• At the right of the graph

• At the left of the graph

• At the top of the graph

Tags

NGSS.MS-PS3-1

This graph represents the following experiment of a speaker's electromagnet.

(Independent Variable: Strength of electric current)

(Dependent Variable: The volume of the sound)

Which axis would the strength of the electric current go?

• X-axis

• Y-axis

• T-axis

• Z-axis

This graph represents the following experiment of a speaker's electromagnet.

(Independent Variable: Strength of electric current)

(Dependent Variable: The volume of the sound)

Which axis would the volume go?

• X-axis

• Y-axis

• T-axis

• Z-axis

Tags

NGSS.MS-PS4-1

This data table represents the following experiment of a speaker's electromagnet.

(Independent Variable: Strength of electric current, unit is number of batteries)

(Dependent Variable: The volume of the sound, unit is dB)

What would be a good scale measure for the Y-axis values?

• 1

• 3

• 5

• 12