Unit 2 Lesson 2

Question 1

Kinetic Theory of Matter

Answer 1

All the particles that make up matter are constantly in motion.
The faster the particles move, the more kinetic energy they have

Individual particles have different amounts of kinetic energy

Question 2

Temperature

Answer 2

A measure of the average kinetic energy of all the particles in an object

The colder the object, the slower the particles move
The hotter the object, the faster the particles move

Question 3

Absolute Zero

Answer 3

The temperature at which the motion of particles stops

It is not possible to reach absolute zero

Question 4

Degrees

Answer 4

Equally spaced units between 2 points

The space between degrees can vary depending on which scale is used

Question 5

Thermometer

Answer 5

Instrument to check temperature

Question 6

Scales to measure temperature

Answer 6

Celsius Scale - most common around the world. Water freezes at 0 C and boils at 100 degrees C

Fahrenheit Scale - Used mostly in the USA. Water freezes at 32F and boils at 212 degree F

Kelvin Scale - used by physicists. Water freezes at 273 Kelvin and boils at 373 kelvin