1. ValueUnit Mass of the Earth Speed of Light Time since the dinosaurs Thickness of a sheet of paper Number of seconds in a day Mass of a hydrogen atom Area of North America

2. ValueUnit Mass of the Earth 6 x 10 24 kg Speed of Light Time since the dinosaurs Thickness of a sheet of paper Number of seconds in a day Mass of a hydrogen atom Area of North America

3. ValueUnit Mass of the Earth 6 x 10 24 kg Speed of Light 3 x 10 8 m/s Time since the dinosaurs Thickness of a sheet of paper Number of seconds in a day Mass of a hydrogen atom Area of North America

4. ValueUnit Mass of the Earth 6 x 10 24 kg Speed of Light 3 x 10 8 m/s Time since the dinosaurs 6.4 x 10 7 years Thickness of a sheet of paper Number of seconds in a day Mass of a hydrogen atom Area of North America

5. ValueUnit Mass of the Earth 6 x 10 24 kg Speed of Light 3 x 10 8 m/s Time since the dinosaurs 6.4 x 10 7 years Thickness of a sheet of paper 8 x 10 -5 m Number of seconds in a day Mass of a hydrogen atom Area of North America

6. ValueUnit Mass of the Earth 6 x 10 24 kg Speed of Light 3 x 10 8 m/s Time since the dinosaurs 6.4 x 10 7 years Thickness of a sheet of paper 8 x 10 -5 m Number of seconds in a day 8.6 x 10 4 s Mass of a hydrogen atom Area of North America

7. ValueUnit Mass of the Earth 6 x 10 24 kg Speed of Light 3 x 10 8 m/s Time since the dinosaurs 6.4 x 10 7 years Thickness of a sheet of paper 8 x 10 -5 m Number of seconds in a day 8.6 x 10 4 s Mass of a hydrogen atom 1.66 x 10 -24 g Area of North America

8. ValueUnit Mass of the Earth 6 x 10 24 kg Speed of Light 3 x 10 8 m/s Time since the dinosaurs 6.4 x 10 7 years Thickness of a sheet of paper 8 x 10 -5 m Number of seconds in a day 8.6 x 10 4 s Mass of a hydrogen atom 1.66 x 10 -24 g Area of North America 2.42 x 10 7 km 2

9. ‘Big’ Numbers 1 x 10 3 Thousand 1 x 10 6 Million 1 x 10 9 Billion 1 x 10 12 Trillion

10. ‘Big’ Numbers 1 x 10 15 Quadrillion - The number of grains of sand on a beach - Market price of all the assets in the World - Number of ants in the World

11. ‘Big’ Numbers 1 x 10 18 Quintillion - Distance (in miles) to the furthest object you can see with the naked eye

12. ‘Big’ Numbers 1 x 10 78 Number of atoms in the Universe 1 x 10 100 A Googol

13. Exam Question This is (part of) a question from a Higher level paper at Grade A/B. a)The mass of a substance is 36000g. Write this in standard form. b) The volume of this substance is 9 x 10 2 cm 3. Given that Density = Mass ÷ Volume, find the density of this substance.

14. Exam Question a)The mass of a substance is 36000g. Write this in standard form. 3.6 x 10 4 g b)The volume of this substance is 9 x 10 2 cm 3. Given that Density = Mass ÷ Volume, find the density of this substance.

15. Exam Question a)The mass of a substance is 36000g. Write this in standard form. 3.6 x 10 4 g b)The volume of this substance is 9 x 10 2 cm 3. Given that Density = Mass ÷ Volume, find the density of this substance. Density = (3.6 x 10 4 ) ÷ (9 x 10 2 ) = 0.4 x 10 2 = 4 x 10 1 = 40 g/cm 3