Science Practice Quiz

What purpose do batteries have in an electrical circuit?

• They move solar energy from the sun to the items requiring energy.

• They provide chemical energy that is changed to electrical energy.

• They absorb the thermal energy from the light bulb.

• They store light and sound energy for later use.

The diagrams show four electrical circuits labeled A, B, C, and D.  Only one of the circuits is constructed correctly.

 

 

 

  Which circuit will most likely allow the bulb to light? 

• Circuit A

• Circuit B

• Circuit C

• Circuit D

Which is an example of electrical energy being transformed into light energy?

• plugging in a fan

• turning on a lamp

• lighting a candle with a match

• bringing a pot of water to a boil

The diagram X and Y shows two metal object hanging from strings.

Which of the following most likely describes the charges of the objects in the diagram?

 

• X:  +, -

  Y:  +, -

• X:  +, -

  Y:  +, +

• X:  +, +

  Y:  +, -

• X:  +, +

  Y:  -, -

Which of the following lists all the forms of energy that electricity can be transformed into?

 

  A.

  B.

  C.

  D.

• light and heat

• sound, light, and heat

• mechanical, sound, light, and heat

• chemical, mechanical, sound, heat, and light

Miguel is rolling a ball down a hill.  This is an example of which form of energy?

• chemical energy

• electrical energy

• light energy

• mechanical energy

A student tested different items to determine which items conduct electricity.  Which list of items includes only items that conduct electricity?

• Copper wire, eraser, steel paper clip

• Block of wood, glass plate, metal spoon

• Plastic button, copper wire, block of wood

• Copper wire, steel paper clip, metal spoon

Solar power is a technology that relies on a renewable energy resource. Solar power changes energy from the sun into a form of energy that can be used to heat our homes and run household appliances. What form of energy must solar energy be changed into in order to run household appliances?

• chemical

• electrical

• sound

• light

Iron becomes rust when it reacts with oxygen. Which of the following is another example of a material undergoing a chemical change to become another material with different characteristics? 

• shattering glass

• freezing water

• burning wood

• melting ice

Ebert's science teacher has a mixture of table salt and iron filings. Which of the following would be the best way to separate the salt and the iron filings? .

 

• Heat up the mixture to see if the salt or the iron filings will burn away

• Pour them into a beaker of water and see if the iron filings float.

• Add food coloring to the mixture to make the salt change color

• Use a magnet to pull the iron filings from the salt.