DP Chemistry (last assessment 2024)

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Question 18N.3.hl.TZ0.14a

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.3.hl.TZ0.14a
Level hl Paper 3 Time zone TZ0
Command term Suggest Question number a Adapted from N/A
a.
[Maximum mark: 2]
18N.3.hl.TZ0.14a

Solar energy, which is freely available, is indispensable to life on earth.

(a)

Suggest another advantage and one disadvantage of solar energy.

[2]

Markscheme

Advantage:

renewable «energy source»

OR

does not produce greenhouse gases

OR

can be installed «almost» anywhere

OR

low maintenance costs ✔

 

Disadvantage:

widely dispersed/not concentrated «form of energy»

OR

geography/weather/seasonal dependent

OR

not available at night

OR

energy storage is difficult/expensive

OR

toxic/hazardous materials used in production

OR

concerns about space/aesthetics/local environment where installed

OR

need to be «constantly» cleaned ✔

 

Accept “can be used for passive/active heating”, “can be converted to electric energy”.

Accept any specific greenhouse gas name or formula for “greenhouse gases”.

Accept “solar cells require large areas”, “solar cell manufacture produces pollution/greenhouse gases”, “higher cost of solar cells «compared with traditional sources such as fossil fuels or hydroelectric»”.

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