Y2_T4_LSN_4.4

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Slide 1: Tekstslide
ScienceMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 16 slides, met interactieve quizzen, tekstslides en 1 video.

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  • Your Macbook (join the LessonUp)
  • Your notebook.
  • Your textbook.
  • Pen & highlighter

Slide 1 - Tekstslide

Topic 4
Moving in the world

Slide 2 - Tekstslide

Plan for today
  • Explanation T4.4 Temperature and heat
  • Make homework

Slide 3 - Tekstslide

4.4 Temperature and heat

Slide 4 - Tekstslide

Learning goals
I can....
  • describe the concept of temperature, the different scales it can be measured on and the units that belong to those.
  • convert temperatures between the Celsius and Kelvin scale.
  • describe the concept of heat and the units it can be measured in.
  • distinguish between the concepts of temperature and heat
  • describe the concept of heat of combustion and use it to calculate the amount of energy released during combustion.

Slide 5 - Tekstslide

Key words
  • Heat
  • Temperature
  • Celsius
  • Kelvin
  • Heat of combustion

Slide 6 - Tekstslide

Heat
Total amount of energy of the molecules that are present in a piece of matter

Unit of heat = Joules (J)


The bigger the energy, the bigger the heat

Slide 7 - Tekstslide

Temperature
Indication of average amount of kinetic energy (movement) per molecule

Symbol: Temperature ( T )
                                                   
Unit: Degrees Celsius ( °C ) and Kelvin (K)

Slide 8 - Tekstslide

Heat vs Temperature

Slide 9 - Tekstslide

Slide 10 - Video

Temperature in Celsius
Based on water

0 °C , water going from solid to liquid or back

100 °C, water going from liquid to gas or back

Slide 11 - Tekstslide

Temperature in Kelvin
Temperature can also be measured in Kelvin (no degrees)

-273 degrees Celsius = 0 Kelvin
0 degrees Celsius = 273 Kelvin

1 degrees up in Celsius=
1 Kelvin up

Slide 12 - Tekstslide

How many Kelvin is 75 degrees Celsius
A
-198 Kelvin
B
0,27 Kelvin
C
3,64 Kelvin
D
348 Kelvin

Slide 13 - Quizvraag

Heat of combustion
Combustion reactions:
Burning fuels produces heat that is used 
for many purposes (exothermic)

Different fuels give off different amounts 
of heat, this is known as the heat of combustion.

(MJ = Mega Joules = 1.000.000J)


Slide 14 - Tekstslide

Gasoline has a heat of combustion of 32 MJ/kg
How much energy wil you get by burning 0,5 kg?
A
64 MJ
B
32 MJ
C
16 MJ
D
32,5 MJ

Slide 15 - Quizvraag

Homework
  • Study the glossary of 4.4
  • Complete the exercises of 4.4 (p. 184-187)
  • Prepare labjournal


timer
10:00

Slide 16 - Tekstslide