Released STAAR

The circuit below does not work. Which procedure would most likely allow the bulbs to light?

• Open the switch and then connect the two wires that are attached to the wood block.

• Switch the positions of the two wires that are connected to the battery and then open the switch.

• Move the switch closer in the circuit to the battery.

• Connect the two wires that are attached to the wood block.

Tags

NGSS.MS-ETS1-1

The diagram shows an electric circuit with four bells that a student plans to build. When the student connects the wires as shown, which of the bells will ring?

• 1 only

• 1 and 4

• 3 and 4

• All of the bells

A group of students built the circuit shown below. The lightbulb does not glow. Which statement explains this observation?

• The battery is not charged.

• The lightbulb is not part of the complete circuit.

• The circuit does not have a switch.

• The bell uses most of the energy from the battery.

Tags

NGSS.MS-PS3-5

A string of lights with small bulbs is shown. The bulbs are connected by a wire that is covered with an insulator. When the lights are on, electricity travels in

• a complete circuit

• a sound wave

• a light ray

• an incomplete path

Tags

NGSS.MS-PS2-3

A student wants to make a change to the circuit shown below so that when Switch 1 is open and Switch 2 is closed, only one light will be on in the circuit. Which diagram shows how the students should change the circuit?

• 
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• 
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Which of these changes to the electric circuit shown above will cause the lightbulb to light up?

• Straightening the wire so that the current can flow more easily.

• Adding a switch and more wire so that the current can flow more easily.

• Turning one battery so that its positive end connects to the other battery's negative end.

• Making the length of wire the same on both sides of the lightbulb.

Some students investigate the properties of four objects using a hand lens, a magnet, and a beaker containing water. Their observations are recorded in the table. Which statement identifies a property that could be used to classify these objects into two different groups?

• Density can be used to separate objects that sink in water from objects that do not.

• Magnetism can be used to separate objects that are attracted by a magnet from objects that are not.

• Solubility can be used to separate objects that dissolve in water from objects that do not.

• Physical state can be used to separate objects that are solids from objects that are not.

Tags

NGSS.5-PS1-3

What is the primary gas found in Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Hydrogen

Which of the following is a chemical change?

• Melting ice

• Boiling water

• Burning wood

• Breaking glass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the formula for calculating force in physics?

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2