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Unit Twenty-two: Conquering Space
Lesson 1
Mysteries of space
Objective: By the end of the lesson you will have
• discussed different bodies in space
• read about black holes and answered questions on the passage
• written short organised notes from scattered information
A Discuss in pairs. What do you know of the following?
a comet a
star the
universe a
planet
Mars
B Read the following description of a black hole. Then answer the questions that follow.
Black Holes
Black holes are produced by huge stars. They are called black holes not because there arc real holes in space but because they cannot be seen as there, is no light I coming out of them. When after burning for billions of years, stars reach the end of their lives their energy does not disappear. The burning core becomes very small like a pinpoint but its weight is as much as a star. It also has tremendous gravity and this gravity pulls towards it everything that comes near it. Although j black holes cannot be seen through telescopes their presence can be identified. They are like gigantic magnets in space.
1 What is a black hole at the beginning?
2 How many years does a star need to turn into a black hole?
3 How can black holes be detected?
C Now listen to your teacher read out the description of a galaxy and then till in the chart below.
Galaxy Origin Number of stars Shape
D Read the following diagrams and write short paragraphs on each of them.
Stars:
• Temperature range 20,0000c-4,7000c
• made of gas throughout
• Classified according to size and temperature
• temperature and density increase towards the centre nuclear reactions at core
• light and heat caused by burning energy
Asteroids
• exist in Asteroid belts round the sun
• most of them journey round the sun in an elliptical orbit
• size ranges from a few millimetres to 580 miles across
• icy planetary bodies, giant snow balls of dirt
• made of rock dangerous if hit Earth, big size can cause massive destruction
• irregular in shape
• most of them journey round the sun in an elliptical orbit
Comets
• size 490 feet across- 580 miles
• has a tail
• some can be seen at regular intervals. e.g. comet Hailey which can be seen after every 76 years
• main body called nucleus
• tail formed when comes near the sun and part of it melts to become gas
Focus:
Skills.
Reading,
listening, note-writing
Functions.
Understanding diagrams, expanding notes, listening for spec i lie information.
Grammar/Structure.
Simple present for universal truths.
Vocabulary.
dirt, lump, core, gigantic.
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Unit Twenty-two: Conquering Space
Lesson 1
Mysteries of space
Objective: By the end of the lesson you will have
• discussed different bodies in space
• read about black holes and answered questions on the passage
• written short organised notes from scattered information
A Discuss in pairs. What do you know of the following?
a comet a
star the
universe a
planet
Mars
B Read the following description of a black hole. Then answer the questions that follow.
Black Holes
Black holes are produced by huge stars. They are called black holes not because there arc real holes in space but because they cannot be seen as there, is no light I coming out of them. When after burning for billions of years, stars reach the end of their lives their energy does not disappear. The burning core becomes very small like a pinpoint but its weight is as much as a star. It also has tremendous gravity and this gravity pulls towards it everything that comes near it. Although j black holes cannot be seen through telescopes their presence can be identified. They are like gigantic magnets in space.
1 What is a black hole at the beginning?
2 How many years does a star need to turn into a black hole?
3 How can black holes be detected?
C Now listen to your teacher read out the description of a galaxy and then till in the chart below.
Galaxy Origin Number of stars Shape
D Read the following diagrams and write short paragraphs on each of them.
Stars:
• Temperature range 20,0000c-4,7000c
• made of gas throughout
• Classified according to size and temperature
• temperature and density increase towards the centre nuclear reactions at core
• light and heat caused by burning energy
Asteroids
• exist in Asteroid belts round the sun
• most of them journey round the sun in an elliptical orbit
• size ranges from a few millimetres to 580 miles across
• icy planetary bodies, giant snow balls of dirt
• made of rock dangerous if hit Earth, big size can cause massive destruction
• irregular in shape
• most of them journey round the sun in an elliptical orbit
Comets
• size 490 feet across- 580 miles
• has a tail
• some can be seen at regular intervals. e.g. comet Hailey which can be seen after every 76 years
• main body called nucleus
• tail formed when comes near the sun and part of it melts to become gas
Focus:
Skills.
Reading,
listening, note-writing
Functions.
Understanding diagrams, expanding notes, listening for spec i lie information.
Grammar/Structure.
Simple present for universal truths.
Vocabulary.
dirt, lump, core, gigantic.