Heat and Temperature - Topics 1-3

Question 1

Thermometer

Answer 1

A device used to measure temperature. Filled with mercury or alcohol. Measures temperature by heating up the liquid in the thermometer. This liquid then expands within the thermometer to a different point on a temperature scale, this tells us the temperature

Question 2

Sensor

Answer 2

a material that is affected by change in some feature in the environment such as temperature

Question 3

Scale

Answer 3

A series of equally divided sections that are marked and numbered for use in measurements

Question 4

Celsius Scale

Answer 4

Water at sea level boils at 100 degrees and freezes below zero

Question 5

Kelvin Scale

Answer 5

Pure water freezes at 273K and boils at 373K. The coldest possible temperature is 0K.

Question 6

Particle Model of Matter

Answer 6

A scientific model of the structure of matter.

1. All substances are made of tiny particles
2. Particles are always in motion
3. Particles have space between them
4. When temperature increases, particle movement increases. When temperature decreases, particle movement decreases

Question 7

Energy

Answer 7

The ability to do work and cause change. Energy cannot be created or destroyed, it can only be transformed from one type to another or transferred from one object to another.

Question 8

Thermal energy

Answer 8

The energy generated by the movement or vibration of particles. The total kinetic energy of all the particles in a substance

Question 9

Responder

Answer 9

A pointer light or other mechanism that uses the signal in some way

Question 10

Signal

Answer 10

Information about temperature such as an electric current

Question 11

Bimetallic strip

Answer 11

Made of two different metals joined together. When the strip is heated one metal expands more than the other. The strip is forced to coil more tightly. When the strip cools the process is reversed. Used to flip a switch inside of a furnace, refrigerator, air conditioner, oven.

Question 12

Solar energy

Answer 12

Energy from the sun

Question 13

Infrared radiation

Answer 13

A type of electromagnetic radiation that has a wavelength just greater than the red end of the visible light spectrum

Question 14

Thermocouple

Answer 14

Wires made of two different metals that are twisted together. When the twists are heated, a small electrical current is generated. The amount of current is dependent on the temperature of the wire. The electrical currents from the thermocouple can be used to turn a switch on or off if the temperature changes.

Question 15

What do we use heat for?

Answer 15

Cooking food, keeping warm, drying clothes, hair, etc.

Question 16

Farenheit Scale

Answer 16

Water freezes at 32 degrees and boils at 212 degrees.