Energy Transformations and Heat Transfer

What does the Law of Conservation of Energy state?

• energy is always created, but not destroyed

• energy cannot be created or destroyed

• energy cannot be created, but can be destroyed

• energy is always being created and destroyed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-2

Which action below is converting electrical to thermal energy?

• An electric vacuum cleaner

• An electric toothbrush

• An electric toaster

Tags

NGSS.MS-PS3-3

______________________ occurs when energy changes from one form to another.

• Energy transformation

• Energy transfer

• Energy balance

• Energy equilibrium

Tags

NGSS.MS-PS3-5

How does heat transfer when noodles are cooked on the stove?

• Heat moves from the water to the noodles to the stove

• Heat moves from the stove to the air to the noodles

• Heat moves from the stove to the pot to the water to the noodles

• Heat moves from the pot to the air to the stove to the noodles

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?

• chemical → thermal

• light → chemical

• thermal → light

• chemical → electrical

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The energy transformation that takes place when a flashlight is turned on is...

• Chemical - electrical - light

• Chemical - light - electrical

• Electrical - thermal - light

• Nuclear - light - electrical

In an oven, electrical energy is transferred to _________ energy.

• Thermal

• Solar

• Electrical

• None

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Heat transfers from an area of ____temperature to an area of ___ temperature.

• high to low

• low to high

• high to high

• It can travel high to low and low to high. 

Warm air rises and the cool air sinks demonstrates this type of heat transfer. 

• conduction

• convection

• radiation

• Insolation 

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 

• destroyed, destroyed

• created, saved

• created, destroyed

• lost, found