Question 20N.3.sl.TZ0.f(i)
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.sl.TZ0.f(i) |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Compare and contrast | Question number | f(i) | Adapted from | N/A |
Gasoline (petrol), biodiesel and ethanol are fuels.
[U.S. Department of Energy. https://afdc.energy.gov/]
When combusted, all three fuels can release carbon dioxide, a greenhouse gas, as well as particulates. Contrast how carbon dioxide and particulates interact with sunlight.
[1]
carbon dioxide allows sunlight/short wavelength radiation to pass through AND particulates reflect/scatter/absorb sunlight ✔
Accept “particulates reflect/scatter/absorb sunlight AND carbon dioxide does not”.
Accept “ absorbs «radiation» AND particulates reflect/scatter/absorb sunlight”.
Do not accept “traps” for “absorbs”.
Showed a wide variety of answers but is was worrying that many students limited to explain the greenhouse effect. There were many responses that did not answer the question or only gave a response for one of the 2 substances.
