Test Prep 1

How do cell phones receive decoded information over long distances?

• They receive digitized information and change it to voice.

• They receive voice and change it to digitized information.

• They receive digitized information and change it to Morse code.

• They receive Morse code and change it to digitized information.

Jessica is holding a ball in her hand and then she drops the ball. Which energy transformation is happening?

• stored energy to motion energy

• stored energy to sound energy

• magnetic energy to stored energy

• electrical energy to motion energy

What energy transfer occurs in a solar panel?

• Heat is transferred to the panel when it is connected to an electrical source.

• Electrical energy is transferred to the panel when it is connected with an electrical source.

• Energy is transferred to the panel when light waves from the sun are absorbed by the panel.

• Mechanical energy is transferred to the panel when waves from the sun push against the panel 

      and move it

Which sentence correctly compares Morse and binary codes?

• Morse code is used by cell phones, and binary code is used by computers.

• Morse code and binary code cannot be used to send messages short distance

• Morse code and binary code use patterns to represent letters in a written message.

• Morse code can only be sent with sound, and binary code can only be sent with electricity.

In which forms is energy transferred when a television is turned on?

• heat and light onlyheat and light only

• sound and light only

• heat, sound, and electricity only

• heat, sound, light, and electricity

A pine tree has cones. A peach tree has flowers. Which of these is the difference between a pine tree and a peach tree?

• A pine tree cannot reproduce without a flower

• The life cycles are different. A pine tree does not die.

•   The seeds are different. One is on a pine cone and the other is in a flower.

•   A peach tree will grow taller because it has flowers that need to reach sunlight