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Copy of STAAR Blitz - Day 3 - Circuits & Force (3/23/2025)

Last updated 7 months ago
16 questions
Required
1

What is needed to make a circuit?

Select ONLY required items.

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1

What is a circuit?

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1

Open vs Closed Circuits

  • The lightbulb is on.
  • The lightbulb is off.
  • The path is complete.
  • The path is incomplete.
  • Closed Circuit
  • Open Circuit
Observe the circuits below to answer 5-8.

Required
1

What is an open circuit?

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1

What is an closed circuit?

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1

If all the switches were closed, which lightbulb would turn on?

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1

Determine the conductivity of each item below as either a conductor or insulator.

  • Foam
  • Aluminum
  • Conductor
  • Insulator
Required
1


Determine what happens to each circuit below if one lightbulb burns out.

  • All bulbs start on, then only one bulb goes out.
  • All bulbs start on, then all bulbs goes out.
  • All bulbs start off, then all turn on except one bulb.
  • All bulbs start off, then stay off.

Using your hand, apply a force to your desk.
1

Why is work being done in the second picture but not the first?

1

1
In every experiment, there are two types of variables: control variables and tested variables. Control variables (independent variables) are items the scientist can control. Tested variables (dependent variables) are the measured outcomes from the experiment (only one item can be the tested variable).


Example:

How does the wingspan of a paper airplane effect the gliding distance?

Control Variables: wingspan, drop height (needs to be constant throughout the experiment)

Tested Variable: gliding distance



Identify the variable being tested in each question below.

How does friction affect speed? __________

What is the effect of the ramp height on the speed of the toy car? __________

What effect does force have on the distance a marshmallow flies off a catapult? __________

What effect does static electricity have on hair? __________
1

Identify all the variables that should be held constant in the question below.

How does position on a teeter-totter affect the force needed to move the other person?

1

Identify all the variables that should be held constant in the question below.

Does the mass of a ball affect how many times it bounces?

1

Identify all the variables that should be held constant in the question below.

How does the mass of a toy car affect how far it travels?

1

Which circuit below is a closed circuit?

1

A student builds a circuit with a battery, two lightbulbs, and a switch, as shown. If the switch remains in the same position, which lightbulb(s) would be on?