Unit 2 Energy Conservation & Transfer

Energy Conservation & Transfer

Unit 2 Review

6th Grade Science

Poll

Which is most like you today?

Multiple Choice

Device/Object that measures temperature. 

• Thermal energy
• Temperature
• Thermometer
• Heat

Multiple Choice

A temperature scale that is used mostly in United States.

According to it, water freezes at 32 degrees and boils at 212 degrees.

• Celsius

• Fahrenheit

• Kelvin

• All of them

Multiple Choice

Scientists' favorite temperature scale, because it begins at the absolute coldest anything can get. 

• Celsius
• Fahrenheit
• Kelvin
• All of them

Multiple Choice

The absolute coldest anything can get.
In Celsius it's at 273 degrees. Or 0 degrees Kelvin.

• Absolute cold
• Kelvin
• Absolute zero
• I don't know

Multiple Choice

There are 3 main scales by which temperature is measured. 

• True 
• False

Multiple Choice

Temperature at which ALL molecules stop moving. 

• 100ºC
• Absolute zero
• 0ºC
• 32ºF

Multiple Choice

Vaporization only at the surface is called

• boiling

• evaporation

• condensation

• melting

Multiple Choice

What is Specific Heat?

• The  amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.
  
• The  amount of radiant energy required to increase the temperature of 1kgof a material by 1°C
• The  amount of energy required to increase the temperature of 1kgof a material by 1°C.
• The  amount of friction  required to increase the temperature of 1kgof a material by 1°C.

Fill in the Blanks

What is the source of all the energy on Earth?

Multiple Choice

How is heat always transferred?

• from cold to hot

• from the air

• from hot to cold objects

• from warm to warm

Multiple Choice

Hot Air Balloon

• convection

• conduction

• radiation

Multiple Choice

How does the Sun warm Earth's surface

• conduction

• electromagnetic radiation

• convection

• electromagnetic insulation

Multiple Choice

The spoon touching your hot soup bowl

• convection

• conduction

• radiation

Multiple Choice

French fries cooking in oil or an air fryer

• convection

• conduction

• radiation

Multiple Choice

Heating on hot plate in Science Lab

• convection

• conduction

• radiation

Multiple Choice

making waffles in a waffle maker

• convection

• conduction

• radiation

Multiple Choice

Roasting a marshmallow toasty brown (not burning it)

• convection

• conduction

• radiation

Multiple Choice

heat emanating off a lightbulb, like in an easy bake oven

• convection

• conduction

• radiation

Multiple Choice

Ceiling fan pushing air

• convection

• conduction

• radiation

Multiple Choice

Warm ocean currents

• convection

• conduction

• radiation

Multiple Choice

Using a flat iron to straighten your hair

• convection

• conduction

• radiation

Multiple Choice

which object will absorb more radiation energy?

• an object in the shade

• an object in the sunlight

• an object inside your home

Multiple Choice

what affect does adding heat have on particle motion?

• decreases motion

• increases particle motion & causes expansion

• increases particle motion and causes contraction

Multiple Choice

What is Thermal expansion?

• The transfer of thermal energy between materials by the collisions of particles 
• Is a decrease in a materials volume when temperature decreases 
• An increase in a materials volume when temperature increases
• Chicken fried rice

Multiple Choice

Objects gain heat and _________. 

• expand
• contract

Multiple Choice

The liquid in the thermometer rises when it is placed in the hot water because ___________. 

• it gains heat from the hot water and expands.
• loses heat from the hot water and contracts. 
• the surrounding air is too warm. 
• the liquid is boiling. 

Multiple Choice

Temperature is related to the average kinetic energy of the particles in an object due to their random motions through space.

• True

• False

Multiple Choice

An increase in the volume of a material due to a temperature increase in the material.

• Thermal contraction

• Thermal expansion

• Thermal heat

Multiple Choice

The instrument used for measuring temperature

• barometer

• thermometer

• calorimeter

Multiple Choice

When temperature increases, distance between molecules ______________.

• decreases

• increases

• stays the same

Multiple Choice

The handle of a frying pan is often coated in rubber because rubber provides...

• Heat insulation
• Heat conduction
• A low melting point
• A nonstick surface

Multiple Choice

Which of the following is NOT an insulator?

• Wool
• Plastic
• Copper
• Styrofoam

Multiple Choice

A great conductor of energy is:

• wood
• plastic
• metal
• cloth

Multiple Choice

Conductors are materials that...

• Allow heat to pass through
• Stop heat from passing through
• Allow cold to pass through
• Stop cold from passing through

Multiple Choice

All of the following are conductors except _______.

• metal spoon
• wire
• iron nail
• plastic spoon

Multiple Choice

Gloves help keep your hands warm in winter because:

• They are conductors of heat.
• They are fuzzy.
• They are conductors of electrical energy.
• They are insulators.

Multiple Choice

Thermal energy travels...

• Hot to cold
• Cold to hot
• Inside to outside
• Outside to inside