What is thermal expansion? a. The way materials almost always ...

[jace]

What is thermal expansion?
 a. The way materials almost always increase their volume as they get warmer.
  b. The way materialsalmostalwa ys increase their volume as they get warmer.
  c. The universe getting larger as it gets older.
  d. The way materials almost always get larger as they get colder.
  e. The way almost all materials get larger as heat is exchanged between them and other objects.

Question 2

What does this infrared photograph of a toaster reveal?
 a. The wavelength or frequency of the main infrared radiation emitted depends on temperature.
  b. Heat flows by conduction.
  c. Heat flows by convection.

[cswans24]

Answer to Question 1

b

Answer to Question 2

a

[jace]

TYSM

[JaynaD87]

Gracias!