Science Unit 5

Which type of energy does moving water have?

• electrical

• kinetic

• wind

• potential

What is energy?

• the ability to move particles of matter

• the ability to cause change or do work

• tiny particles of matter in a fixed position

• tiny particles of matter that move in all directions

Which of the following uses wind as its main source of energy?

• riding a bicycle outdoors

• flying a helicopter

• flying a kite

• skiing on a mountain

Which type of energy is formed by vibrating objects?

• light energy

• sound energy

• thermal energy

• electrical energy

A guitarist strums two strings of the same thickness on a guitar. The first string vibrates more quickly than the second. What is true about the pitch of the strings?

• the first string has a higher pitch than the second string

• the second string has a higher pitch than the first string

• the first string and the second string have the same pitch

• the pitch of the second string depends on the pitch of the first string.

Which is the best description of a sound wave when the pitch of the sound is very high?

• it has a low frequency

• it has a high frequency

• it has no wavelength

• it has no frequency

How is energy initially being transferred by the campfire?

• convection ----> heat

• radiation ----> heat

• radiation ----> thermal energy

• convection ----> thermal energy

How is heat transferred during conduction?

• when two objects touch, there is an even exchange of heat between them

• when two objects touch, heat flows from the cooler object to the warmer object

• when two objects touch, heat flows from the warmer object to the cooler object

• none of the answer choices

A cold drink is left in the sun gets warm. How is thermal energy transferred in this example?

• conduction

• convection

• radiation

• none of the answers above

Tyler holds a warm muffin in his hand. By what process does the heat travel from the muffin to the hand?

• conduction

• convection

• radiation

• reflection