STAAR Review - Day 3 - Circuits and Force

Matching - Select the best answer.

• Closed circuit

• A push or a pull

• Force

• Does not allow an electrical current to flow through a continuous path

• Circuit

• The path that electricity flows

• Open Circuit

• Allows an electrical current to flow through a continuous path

A student rolled a toy car down a ramp with different surfaces - wood, carpet, and tile. The student measured the distance that the car traveled. Which question is the student most likely investigating?

• Does the height of the ramp affect the distance the car rolls down the ramp?

• Does the type of surface affect the speed the car rolls down the ramp?

• Does the type of surface affect the distance the car rolls down the ramp?

• Does the type of car affect the distance the car rolls down the ramp?

Students made the circuit shown.

Which light bulbs will remain lit if the wire is cut at Position X?

Select TWO correct answers.

A student designs an experiment to test the effect of the width of a piece of elastic on the elastic’s ability to stretch. The student selects four pieces of elastic with different widths but the same length. The student then attaches blocks with different masses to the pieces of elastic. The results of the student’s experiment are shown below.

What should the student do to improve this experiment?

• Use blocks of equal mass on the four pieces of elastic

• Use blocks with enough mass to cause the four pieces of elastic to break

• Use more than four pieces of elastic and four blocks

• Use four pieces of elastic with different lengths but the same width

This circuit has three lightbulbs and a bell.

Which procedure will result in only the blue lightbulbs operating?

• Close switches 1 and 2 and leave switch 3 open

• Close switch 3 and leave switches 1 and 2 open

• Close switches 2 and 3 and leave switch 1 open

• Close switch 2 and leave switches 1 and 3 open