Energy Transformations and Heat Transfer Practice

The Law of Conservation of Energy states that

• energy is always created and destroyed.

• energy is neither created or destroyed, it just moves and transforms.

• energy is always created; but never destroyed or transformed.

Tags

NGSS.MS-PS3-5

Which action below is converting electrical to thermal energy?

• An electric vacuum cleaner

• An electric toothbrush

• An electric toaster

____________________ occurs when snowflakes melt in your warm hands.

• convection

• conduction

• radiation

• thermal balance

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When snowflakes melt in your hand, thermal energy (or heat) moves from _____________________ to ___________________

• your hand to the air

• your warm hand to the snowflake

• the snowflake to the air

• from the warm air to the snowflake

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

_______________ is when heat is transferred (or moves) through electromagnetic waves. This can occur in air or space.

• radiation

• conduction

• convection

• rotation

What energy transformations occur when using a cell phone?

• chemical to electrical, sound, and light energy

• thermal to heat, light, and chemical energy

• nuclear to chemical to electrical energy

• elastic to potential to kinetic to chemical energy

Tags

NGSS.HS-PS4-5

_____________________ occurs only in gases and liquids. This is one way heat transfers from one place to another.

• Conduction

• Convection

• Radiation

• Containment

Tags

NGSS.MS-ESS2-6

In convection currents, the _____________ part rises and the _____________ part sinks.

• warm, cool

• cool, warm

• cold, hot

• cold, cold

Tags

NGSS.MS-ESS2-6

LT4: Identify the heat transfer occurring in this picture

• conduction
• convection
• radiation

Tags

NGSS.MS-PS1-4

LT4: Identify the heat transfer happening in this image

• conduction
• convection
• radiation