Grade 4 Mrs. Kmetz Science Light and Sound

A mother hen clucks loudly when danger is near and her chicks quickly gather around her. Which sense helps the chicks receive this warning about danger from their mother?

• smell
• taste
• light
• sound 

A girl signals her friend by shining a flashlight on a mirror. Her friend can see the signal because

• heat energy can be transferred from one object to another
• mechanical energy can be transferred from one object to another
• sound energy can be reflected from one object to another
• light energy can be reflected from one object to another

When a person speaks into a telephone, sound energy is changed mostly into which form of energy?

• heat
• light
• electrical 
• chemical

When a baby shakes a rattle, it makes a noise. Which form of energy was changed to sound energy?

• electrical 
• light 
• mechanical 
• heat 

When the flashlight is turned on, electrical energy is changed to which type of energy? 

• heat 
• sound 
• light
• mechanical 

Which type of energy is needed to cut a piece of wood into smaller pieces with a saw?

• light
• heat 
• sound 
• mechanical 

Which energy transformation occurs when a person hits a drum with a drumstick?

• electrical to light
• sound to electrical
• light to mechanical
• mechanical to sound

What form of energy is being used when a person pushes a wooden block across the floor?

• mechanical 
• magnetic 
• sound 
• electrical 

Which form of energy is produced when a guitar string vibrates?

• chemical 
• light 
• magnetic 
• sound 

When a lightbulb is lit, electrical energy is changed into light energy and

• chemical energy
• magnetic energy
• heat energy
• mechanical energy