1. The scientist and inventor who is credited for the first working telephone is called

2. Which gas, found in the upper layers of the atmosphere, absorbs the harmful Ultra Violet rays of light that come from the Sun

3. What is the largest planet in our solar system?

4. What is the lowest level in the Earth's atmosphere?

5. The scientist best known for his work on gravity, light and mathematics is called

6. An 'Anaerobic digester' is a device that uses bacteria to recycle waste and produce what kind of gas?

7. In which part of your body will you find a retina?

8. Which of the following would you use a clinometer to measure?

9. Coal is made up mostly of which element?

10. Which of the following is true about the Moon