Chapter Graphic : Te Wai Tömiti — Disappearing Water
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Approach: Station
Focus: Explanation of evaporation and understanding of the water cycle.
96k
Resources: Video showing evaporation with hand fanning and use of a hair dryer.
Questions / instructions:
In this activity you are going to watch a video clip showing people cleaning a blackboard, then answer some questions about what you saw happening in the video.
 Watch the video and then answer these questions.
You may replay the video if you need to.

I tënei mahi e mätakitaki ana koutou i tëtahi rïpene ataata poto o ngä tängata e ükui ana i te papatuhituhi, kätahi ka whakautu i ngä pätai o ngä mahi i kite koutou.

Mätakitaki i te ataata, ä, ka whakautu i ënei pätai. Me whakaatu anö te rïpene ataata mehemea koutou e hiahia ana.
Two squares were marked on the blackboard. One was dried using fanning (left) one was dried using a hair dryer (right).
 
% responses
GEd
MI
1. Why did fanning the wet blackboard help it to dry?
He aha i maroke ai te papatuhituhi i te täwhiritanga?
0
0
 
fanning moves moist air away from the blackboard to allow more to evaporate
mentions wind and/or water vapour and/or evaporation
9
12
mentions wind or air movement only
63
79
2. The hairdrier uses heat as well as fanning. Why did the heat dry the blackboard faster?
He mahana, he täwhiri ngä whakamahinga o te whakamaroke makawe. He aha i tere ake ai te maroke o te papatuhituhi i te mahana?
50
34
 
mentions increased warmth helping evaporation
3. Where does the water go as the blackboard dries?
Ka tömiti te wai ki hea i te wä e maroke haere ana te papatuhituhi?
50
40
 
evaporation or equivalent (eg. "into the air")
4. Now think about a puddle on the footpath. Where does the water go when the puddle dries out?
Nä, whakaaro ki tëtahi höpuapua i te ara hïkoi. Ka ngaro te wai ki hea ina tömiti ai te höpuapua?
9
2
 
both in to the air and the ground
into the air/sky
46
40
into the ground
30
30

5. The water that falls as rain in one place may come from another place that is far away. Explain how this happens. You can draw a diagram with labels to help explain your answer.
 Tërä pea ko te ua o tëtahi wähi i puta kë mai i tëtahi wähi pämamao. Whakamäramatia he aha i pënä ai?
Tängia he hoahoa, me öna tapa, hei whakamärama i tö whakautu.
10
14
Includes all three aspects:
water evaporation from source,
cloud movement,
rain falling elsewhere
Commentary:
Overall, the performances of GEd (General Education) and MI (Mäori Immersion) students were not statistically significantly different.
 
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