Page 77 - big-4-lop-8-tap-2_Neat

X Read the passage. Fill in the gap with one suitable word.
A UFO (Unidentified Flying Object) is any object (1) ………………… in the sky
which can be unidentified by the person who (2) …………………it. Sometimes the object
is investigated. If people cannot figure (3) ………………… what the object is after an
investigation, it is called a UFO. If they figure out what the object is, it can no (4)
………………… be called a UFO because it has been identified. Even though UFOs can
be anything, people can (5) ………………… the word UFO when they are talking about
aliens‟ spacecraft. Flying saucer is another (6) ………………… that is often used to
describe an identified flying (7) ………………… Studies estimate that 50-90% of all
reported sightings are identified later. Usually 10-20% are never identified. Studies also (8)
………………… that very few UFO sightings are hoaxes (people trying to trick other
people). Most UFOs are actually natural or man-made objects that (9) …………………
strange. 80-90% of UFOs are identified as one of these different things: (a) astronomical
causes (for example: planets, stars, or meteors); (b) aircraft; and (c) balloons. 10-20% of
UFOs are other causes, (10) ………………… as birds, clouds, mirages, searchlights, etc.

D. SPEAKING

XI Work in pairs. Two students tell each other about the information of the planets
given in their cards.

Student A’s card: Student B’s card:

JUPITER PLUTO
- the 5th planet out from the Sun - the 9th planet out from the Sun
- 2.5 times more massive than all the other - the 2nd closet dwarf planet to the Sun
planets in the solar system combined - the largest dwarf planet

- known as “gas giant” (made primarily - Diameter: 2,372 km
of gases) - Mass: 1.31x10^22 kg (0.17 Moons)

- Equatorial Diameter: 142,984 km - Orbit Distance: 5,874,000,000 km
- Polar Diameter: 133,709 km (39.26 AU)
- Mass: 1.90 x 10^27 kg (318 Earths) - Orbit Period: 248.0 years

- Orbit Distance: 778,340,821 km - Surface Temperature: -229°C
- Orbit Period: 4,333 days (11.9 years) - Discovery Date: February 18th 1930
- Effective Temperature: -148 °C - Discovered By: Clyde W. Tombaugh

- First Record: 7th or 8th century BC
- Recorded by: Babylonian astronomers

XII Now talk with your friend about one of the science and technology’s inventions that
you think is very important for our life.
You should base on the suggestions below:

- What is the invention?
- Who invented it?
- When/ where was it invented?

- What is it for?
- How important is it for our life?

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