Q3 Science CFA Review

The conversion (change) of one form of energy into another, or the movement of energy from one place to another.

• kinetic energy

• potential energy

• mechanical energy

• energy transfer

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How is kinetic energy solved? ​ ​ (a)   ​

How is potential energy solved? ​ (b)  

Tags

NGSS.HS-PS2-4

What is the formula for mechanical energy?

Tags

NGSS.MS-PS3-4

What two energies are inversely related? (When one increases, the other decreases)

• positive & negative energy

• potential & kinetic energy

• thermal & mechanical energy

• chemical & electrical energy

Tags

NGSS.MS-PS3-2

The faster something is moving and the more massive it is, the more kinetic energy it has. So with that being said, on what two things does kinetic energy depend?

• mass of the object and the velocity

• color and how many

• temperature and texture

• texture & velocity

Tags

NGSS.MS-PS3-1

​ (a)   is the transfer of thermal energy.

• Heat
• Potential energy
• Thermal energy
• Kinetic energy

Tags

NGSS.MS-PS1-4

​ (a)   is energy produced when the molecules of a substance vibrate. It is a form of kinetic energy. It is always transferred from hotter areas to colder areas.

• Thermal energy
• Heat
• Potential Energy
• Kinetic Energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

In what three ways is thermal energy transferred?

• radiation

• convection

• separation

• conduction

Tags

NGSS.MS-PS1-4

Match the following

• the transfer of thermal energy through waves

• Convection

• the transfer of thermal energy through circulation of fluids

• Conduction

• the transfer of thermal energy through direct contact (between things that are touching)

• Radiation

Answer explanation

- Radiation: Objects/liquids/gasses do not need to be touching to transfer the heat.

- Convection: This happens through the up and down movement of liquids or gasses. Hot liquids->gasses rise and cooler liquids-> gasses sink.

- Conduction: When you touch one hot surface to another, the hot molecules bump into the other molecules which makes them start to move faster. An object gets hotter from the movement of the molecules.

Tags

NGSS.MS-PS3-3

Match the following

• Ex.) Placing a spoon in a bowl of hot soup results in a hot spoon.

• Conduction

• Ex.) Boiling water, air masses, hot air balloons

• Radiation

• Ex.) Sun warming the Earth, warming hands over fire, heat lamps at fast food restaurant

• Convection