高一英语A Lesson in a Lab课件

高一英语A Lesson in a Lab课件

Welcome !

高一英语A Lesson in a Lab课件

lab

高一英语A Lesson in a Lab课件

They are doing scientific experiments.

高一英语A Lesson in a Lab课件

It’s a good place to study , It’s a great place to explore , It’s a wonderful place to discover new things !

高一英语A Lesson in a Lab课件

MODULE 5

A Lesson in a LabReading and VocabularyPassage B

A Simple Scientific Experiment

高一英语A Lesson in a Lab课件

http://doc.guandang.net

高一英语A Lesson in a Lab课件

The stages of a scientific experimentA.result C.conclusion B D B.aim

D.methodA C

高一英语A Lesson in a Lab课件

Apparatus

clean iron nails

test tubes

test tube holder

cotton wool

oil

Bunsen burner

高一英语A Lesson in a Lab课件

1. What is the use of the cotton wool in the test tube?The cotton wool can keep air dry. 2. Why must we boil the water?

This makes sure there is no air in the water.3. What is the use of the oil? The oil can keep air out of water.

高一英语A Lesson in a Lab课件

An Experiment Report Aim 1. __________: Apparatus 2. __________: Method 3. __________: (1) (2) (3) Result 4. __________: 5. __________: Conclusion

高一英语A Lesson in a Lab课件

Iron in dry airAimTo find out if iron rusts in dry air.

Apparatus clean iron nails, a test tube,test tube holder, cotton wool

Method(1) Put some iron nails at the bottom of a test tube. (2) Push some cotton wool down the tube.

(3) Leave the tube for one week.

高一英语A Lesson in a Lab课件

Iron in the dry airResult After one week, the nails have not rusted. Conclusion Iron does not rust in dry air.

高一英语A Lesson in a Lab课件

Iron in air-free waterAim To find out if iron rusts in water thathas no air in it (air-free water).

Method Apparatus Resultclean iron nails, a test tube, test tube holder, Bunsen burner, oil The nails do not rust in the tube with air-free water.

ConclusionIron does not rust in the air-free water.

高一英语A Lesson in a Lab课件

Iron in ordinary waterAimTo find out if iron rusts in ordinary water. clean iron nails, a test tube, test tube holder

Apparatus Method

(1) Half-fill a test tube with water and add

two or three clean nails.(2) Leave the tube for one week.

高一英语A Lesson in a Lab课件

Iron in ordinary waterResultThe nails rust in the tube with ordinary water.

ConclusionIron rusts in ordinary water.

高一英语A Lesson in a Lab课件

Iron nails rust in wet air.