Advertisements
Advertisements
Question
Why are coal and petroleum called fossil fuels?
Advertisements
Solution
The coal is formed by compression of Carboniferous age forests between impervious sedimentary rock-folds and the petroleum is the stored ‘body oil of dinosaurs of the Jurassic period in between the impervious rocks within the poses of shale rocks. So these are called the fossil fuels on account of being buried within the rocks like the fossils for a long period under the pressure of tectonic forces.
RELATED QUESTIONS
Briefly state the importance of climate.
Name the areas of the Cool Temperate Ocean type climate
Prepare the rainfall graph of the data given below and answer the questions that follow :
| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sep. | Oct. | Nov. | Dec. | |
| Temp(°C) | 26.9 | 27.6 | 28.7 | 29.1 | 28.4 | 26.5 | 25.9 | 26.0 | 26.4 | 26.8 | 27.1 | 26.9 |
| Rainfall mm | 22.2 | 25.4 | 48.7 | 128.5 | 326.3 | 741.3 | 610.4 | 348.7 | 249.0 | 316.9 | 159.8 | 47.4 |
(a) What is the average annual temperature?
(b) Calculate the annual range of temperature.
(c) In which climate type is this station?
What gases does air contain?
How do forests retain water?
Which places in India can be used for tidal power generation?
How many biogas plants have been set up in India under the National Biogas Development Programme?
What forms the basis of a general scheme of natural regions of the world?
Name any four countries which have monsoon climate.
Show the following items on an outline map of the world. Prepare the index.
- Colorado Desert
- British Columbia
- Downs Grassland
- Inhabited part of Greenland
- Mediterranean Sea
