1. Twinkle twinkle little star How I wonder what you are Up above the world so high Like a diamond in the sky Twinkle twinkle little star How I wonder what you are

2. Astronomy astronomer

3. BRAIN BIG BANG physicist chemist biologist geologist

4. A.The pull of the gravity causes matter to have weight. B.Anything that is dropped falls towards the centre of the earth because of the pull of gravity. C.Zero gravity accounts for weightlessness. D.The theory of universal gravity belongs to Newton’s three laws of motion. Which of the following description is not true? physicist

5. Which of the following results is caused by the over-discharge of the harmful gases from factories and cars? A.Global warming B.Acid rain C.Animal extinction D.Water pollution

6. 1.Yandang mountains were formed after a series of geologic movements such as volcano eruption with fire and rock. 2. That carbon dioxide in the layer which covers the earth traps the heat from escaping into the space accounts for global warming. 3. How the earth came into being is one of the key problems which makes many scientists feel helpless. atmosphere prevent from fundamental puzzle multiply explode a chain of a chain of explosions the atmosphere prevents fundamental puzzles many scientists. Replace the italicized words and phrases from

7. Example: dog-run:bird-fly. 1.dinosaur-__________: frog-amphibian A.animal B. huge C. extinct D. reptile 2.reptile- lay eggs: mammal-_________ A.appear and spread all over the earth in their turn B.breathe in oxygen and breathe out carbon dioxide C.give birth to young babies and produce milk to feed them D. exist on the earth

8. How life began on the earth Stage 1 The origin of the earth Stage 2 The development of the earth Stage 3 The origin of the life Stage 4 The development of life

9. Good morning, I am …. I’m greatly honored to be here to give you a speech about how the life began on the earth …

10. Big bang stars and dust a solid globe Stage 1 The origin of the earth a cloud of dust

11. TimeAtmosphereAppearanceAdjectives to describe them 4.5-3.8 billion years ago 3 billion years later cool down N 2 CO 2 Water vapour harmful gases … N 2 O 2 CO 2 H 2 O ( gas ) It _______ loudly with fire and rock Water _________ on the ______ of the earth to form ______ and ____. Stage 2 The development of the earth exploded appeared surface oceansseas

12. Stage 3 The origin of the life Water? The continued presence of water? or (dissolve, harmful, acids, chain reaction…)

13. Stage 4 The development of life 1________________ 2____________________ 3________________ 4__________ 5__________ 6_________ 7__________ 8__________ 9__________ small plants in water shellfish and all sorts of fish green plants on land insects (on land) amphibians (on land as well as in the water) forests reptiles (appear) dinosaurs (exist, lay, extinct) mammals ( spread, give birth to) plants animals (multiply) (encourage) First… Then… After that… (followed in time) What’s the next stage?