Energy Transformations

The picture shows a lightbulb attached to a hand-held wind-up flashlight. What energy transformation occurs as the handle is turned to make the bulb work?

• thermal to solar to light

• mechanical to electrical to light

• solar to light to electrical

• electrical to mechanical to light

Tags

NGSS.MS-PS3-5

A cell phone is plugged into the wall using it's charging cable. What energy transformation is occurring?

• Electrical energy from the wall is transferred to the phone's battery where it is stored as chemical energy to power the phone

• Thermal energy from the wall is transferred to the phone's battery where it is stored as mechanical energy to power the phone

• Electrical energy from the phone is transferred to the wall outlet where it is stored as chemical energy to power the phone

• Radiant energy from the phone is transferred to the wall outlet battery where it is stored as mechanical energy to power the phone

What energy transformation is occurring?

• mechanical from the wax -> electrical and sound

• thermal from the wax -> mechanical and electrical

• mechanical from the wax -> chemical and sound

• chemical from the wax -> thermal and light

Tags

NGSS.MS-PS1-4

This is a picture of how water can change mechanical energy into electrical energy. Between which 2 steps is mechanical energy being converted to electrical energy?

• 1 and 2

• 4 and 5

• 3 and 4

• 2 and 3

Match the type of energy transformation that is occurring on the image:

b

c

a

e

d

Thermal

Nuclear

Mechanical

Electrical

Chemical

Which energy transformation occurs as you use a microwave to cook your food?​ (a)  

• nuclear -> radiant -> thermal

• electrical -> thermal -> chemical

• nuclear -> thermal -> chemical

• electrical -> radiant -> thermal

Tags

NGSS.MS-PS3-5

What is the correct energy transformation (in order) when using the hair dryer?​ (a)   ​ (b)   ​ (c)   ​ (d)  

• electrical

• mechanical

• sound

• thermal

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which energy transformation occurs in a microwave?​ (a)  

• chemical->electromagnetic->Chemical

• kinetic->chemical->Thermal

• Electrical->Light->Chemical

• Electrical->Electromagnetic->Thermal

Tags

NGSS.MS-PS3-3

What is the correct energy transformation when using the hair dryer?​

• electrical

• mechanical

• thermal

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

A teacher rubbed a match against a piece of sandpaper. The match began to burn. Which statement best described the energy transformations you watched?

• chemical energy stored in the match became thermal energy and light energy

• thermal energy stored in the match became light energy and chemical energy

• light energy and thermal energy stored in the match changed to mechanical energy

• light energy and thermal energy stored in the match became chemical energy

Tags

NGSS.MS-PS3-5