Thermal Energy

Thermal energy comes from ________________.

• how hot something is

• the movement of molecules

• the flow of electrons

Tags

NGSS.MS-PS1-4

How is heat measured?

• in joules

• Celsius

• Fahrenheit

If the molecules in an object move faster, the object becomes _______.

• bigger

• colder

• hotter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which one of the following is not a source of thermal energy?

• sound energy

• chemical energy

• electrical energy

• geothermal energy

Look at the picture. What is the source of the thermal energy?

• light energy

• mechanical energy

• chemical energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Karen is at the beach with her family. After playing in the sand for an hour, she notices her skin getting warmer. Why is this happening?

• Thermal energy from the sun is traveling by conduction.

• Thermal energy from the sun is traveling by convection.

• Thermal energy from the sun is traveling by radiation.

Sam is cooking soup for dinner. He stirs the soup on the oven and leaves the spoon in the pot. When he returns to check on the soup, the spoon is too hot to touch. What happened?

• The thermal energy from the hot soup travelled to the spoon by conduction.

• The thermal energy from the hot soup travelled to the spoon by convection.

• The thermal energy from the hot soup travelled to the spoon by radiation.

Olivia makes some hot cocoa for her little sister. When she sets the cup down on the table, she notices steam rising from the top. What caused the steam to rise from the cocoa?

• The heat from the cocoa is traveling by conduction to the cooler air that surrounds it.

• The heat from the cocoa is traveling by convection to the cooler air that surrounds it.

• The heat from the cocoa is traveling by radiation to the cooler air that surrounds it.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

The different temperatures of objects cause heat to travel from _____________________.

• a hotter object to a cooler object.

• a cooler object to a hotter object.

Tags

NGSS.MS-PS1-4

A hot air balloon uses ________________ to rise and descend.

• friction

• radiation

• convection