2017 TYS answers comments

Section A

1aii) Know the differences between stratified, systematic and random sampling method.

1c) MUST use information from DATA eg %

2) Oktas :  a unit used in expressing the extent of cloud cover, equal to one eighth of the sky.

aii) Stevenson screen

aiii) Diurnal = Highest minus lowest temperature

- use data from both Fig. 3 and 4.

- Inverse =  something that is the opposite or reverse of something else.

c) anomalies = data that is out of the normal

3b) disposable income = income remaining after deduction of taxes and social security charges, available to be spent or saved as one wishes.

Section C

b) subduct =  the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate.

d) Surtsey volcano

e) Block mountains formation = importance of TENSIONAL forces pulling apart

2nd method: Compressional forces pushes block mountains upwards, forms fault lines , causes the sides to rise upwards, corners becomes eroded to form BM (Demonstration)

5) 

a) Relief : terrain (describe the gradient of the slopes)

- Use contour lines, closer lines refer to steeper slopes. gentles lines refer to gradient slopes

b) viscosity = stickiness of lava, (type of lava flow)

c) shortwave radiation = 

Shortwave radiation (SW) is radiant energy with wavelengths in the visible (VIS), near-ultraviolet (UV), and near-infrared (NIR) spectra.

The sun emits shortwave radiation because it is extremely hot and has a lot of energy to give off. Oncein the Earth's atmosphere, clouds and the surface absorb the solar energy. The ground heats up and re-emits energy as longwave radiation in the form of infrared rays.

5d) lines of latitude

Resource pack sample question - Tourism GI Hypothesis

Hypothesis : Visitors from the place farthest away from Singapore stayed the longest

What conclusion can the students make about the hypothesis?  Support your answer with data from Table 2. [4]

                                                                                                                                                                      

Number of visitors to Orchard Road and their length of stay

Origin of visitors	No. of visitors interviewed	Length of stay
		No overnight stay	1 – 3 nights	4 – 7 nights	8 – 14 nights
United States of America	7	0	2	4	1
United Kingdom	6	0	1	3	2
Japan	10	0	4	5	1
Australia	5	0	1	4	0
India	9	0	3	6	0
Malaysia	8	3	5	0	0
Indonesia	5	1	4	0	0

Table 2

Reserve 1 mark for proving hypothesis:

·        The students can conclude that the hypothesis is true.

                       

                        3 marks for support with data:

·        Visitors from the place farthest away from Singapore stayed the longest (places more than 12 hours away from Singapore by flight).  A majority of the visitors from UK and US interviewed would stay for 4 nights or more (5 out of 7 for USA and 5 out of 6 for UK).

·        Visitors from the place of between 6 to 12 hours away from Singapore by flight stayed mostly between 1 to 7 days.

Visitors closest to Singapore such as Malaysia and Indonesia did not stay overnight or stayed only 1 to 3 days in Singapore

(b)    Suggest one reason why the data in Table 2 may not be valid in proving the hypothesis.               [1]

Reserve 1 mark for the following:

·        The data in Table 2 may not be valid as an unequal number of visitors were interviewed from each country. 

·        OR

·        The students could have gone to other places other than Orchard Road to conduct their interviews.

Hypothesis answers

State whether the hypothesis has been proven or disproven. Support your stand using evidence in Fig. 6.

·        The hypothesis has been proven.

·        The bipolar graph has most of the responses at a positive numbers. [1]

·        For example, response for well-kept buildings has about 43 positive responses. [1]

·        For example, response for the litter around has about 42 positive responses. [1]

Hypothesis

Another student suggested investigating the impact of Resorts World Sentosa on the tourists’ experiences using a bipolar survey. His hypothesis is: The built environment in Resorts World has a positive effect on tourists’ experience. The survey is conducted at the various attractions using the systematic sampling between 1pm to 3pm on a weekday afternoon. Study Fig. 6, which shows the bipolar graph. Bipolar Graph Fig. 6

State whether the hypothesis has been proven or not. Support your stand using evidence in Fig. 6.

Landuse survey by students

~ No need bridge, canal, traffic light for landuse survey

~ No need walkways and roads, title could be ' landuse survey of Hougang Block 644 and 631. 

~ What do the boxes and circles mean?

~ no need drains and roads

~No need pavements and roads. Dont leave a gap between the shops. It is all side by side.

~ Shops should be aligned next to each other

 ~ What is the little symbol at the left sides? No need traffic lights

~ Interesting use of legends. Quite well organized. Do not need bus stops etc

~ What do the circles represent?

Coogle on advantages and disadvantages of data representation modes

Instructions (work in pairs)

1. Go to your email address (Check spam folder) for coggle link

2. Look for the data mode that is being assigned to you (guess the initials!)

3. Research for the advantages and disadvantages of that mode
   - Write in point form
   - Use your own words because its your own notes

4. Insert in a picture to illustrate the data representation mode

5. Try not to accidentally remove / edit other's work

Bipolar survey