1. How oil and gas were formed
This PowerPoint presentation has been downloaded from Presentation written by John Clegg.
© Copyright Springer Nature Ltd Animation licensed from The Science Museum.

2. First …
1. Look at the questions in exercise 1 on the worksheet: discuss them with your partner/group.

3. Next
2. Look at the following picture slides and answer the questions from exercise 1 on the worksheet. (Make notes.)

4. Over millions of years, the sun shone on tiny plants in the sea.

5. These plants absorbed the sunlight and grew.

6. Providing food for tiny creatures that swam in the water.

7. Eventually, the plants and creatures died and their bodies fell to the ocean floor,

8. where they were buried by sand and mud.

9. Pressure and temperature built up over 2 million years

10. and eventually turned the bodies into a liquid called crude oil and a gas called natural gas.

11. Today oil and gas are important sources of energy in our lives.

12. Now … Discuss your answers to exercise 1 in groups.
Do exercise 2 on the worksheet: talk about the pictures using the prompts.
5. Do exercise 3 on the worksheet: complete the gaps.

13. Presentation (for classes working in groups only)
6. Give an oral commentary on the picture slides.