Тема: Ознайомлення із зовнішніми планетами.
T.: In
order to learn new items we start to work with lexical cards (card #1). Here you can see some new words:
- Galilean moons
- gas giants
- Great Red Spot
- outer planets
- planetary rings
T.: Now
we are going to read and translate the text.
Outer planets of the Solar System
Our solar
system is made up the sun, eight planets, more than 150 moons, as well as
comets, asteroids, dwarf planets and other space rocks.
Planets,
asteroids and comets orbit the sun. They travel around our sun in an ellipse.
It takes Mercury, the nearest planet, only 88 days but Neptune 164 years to
travel around the sun once.
Moons orbit planets. Currently, Jupiter has the
most moons – over 60. Mercury and Venus don't have any moons.
The inner
planets Mercury, Venus, the Earth and Mars are called terrestrial planets. This means they have a
hard surface to stand on. Jupiter,
Saturn, Neptune and Uranus are the outer planets. They are also called the gas
giants because you can't stand on them - their
surface is made of gas.
There are
many theories on how the solar system
developed. About 4.5 billion
years ago a big cloud of gas and dust probably
collapsed. The sun formed in the middle, the densest region. Further away from the sun,
gases changed to planets made of rock.
The planets
of our solar system
Jupiter
Jupiter is the fifth planet from the sun and
the largest in our solar system. It has 1 400 times the volume of our Earth, but is only 300 times as heavy because the planet must be made up of
gas rather than rocks or metal.
completes
one full turn every 10 hours. If you look at Jupiter closely, you can see stripes
, probably clouds that are created by
fast-moving winds.
Saturn
Saturn is
the sixth planet from the sun and the second-largest in our solar system. It is
different from the other planets because of its rings, which were first seen by
the Italian astronomer Galileo in 1610.
You can see
Saturn without using a telescope, but you need one if you want to see its
rings. Saturn has a diameter about 10 times larger than the Earth and about 760
Earths could fit into the planet.
Uranus
Uranus is
the seventh planet from the sun. It is sixth in size and just visible to the
human eye. It was discovered by accident
by the British astronomer William
Herschel in the 18th century.
Uranus has
a diameter of over 50,000 km - about 4 times that of the Earth and it is 3 billion
km away from the sun. It takes Uranus 84 years for one single orbit around the
sun and 17 hours for one rotation around
its axis. The unusual thing about Uranus
is that its poles are pointed directly
at the sun. This means that it orbits the sun on its side. Each pole gets 42
years of sunlight and then 42 years of darkness.
Neptune
When
Neptune was discovered 1846 astronomers thought it was a star. It is the eighth
planet from the sun. It does not shine so brightly, so it is only visible when
you use a telescope. It appears as a green - bluish disc, like Uranus.
It takes Neptune, which is almost 4.5 billion
km away from Earth, almost 165 years to travel around the sun once. Neptune's
day is shorter than an Earth day - only 16 hours.
T.: You have got the cards with the task. We have
just read the text.
Your task is to choose
the right answers (card #2).
1. What
is the biggest planet in our Solar System?
Neptune
Uranus
Saturn
Jupiter
2. Which statement about the outer planets is
TRUE?
Saturn
is the only outer planet that has rings.
The
outer planets are all very warm and have volcanoes.
The
outer planets do not have many moons.
The
atmosphere of the outer planets are made of thick and swirling gases.
3. Which planet is furthest from the sun?
Saturn
Neptune
Uranus
Mars
4.Which statement about Neptune is true?
Neptune
has a ring system.
Neptune
has five known moons.
Neptune
is made entirely of gas.
Neptune
can be seen by eye on a clear night.
5. Which planet has seasons that last for about
40 years long?
Jupiter
Neptune
Uranus
Earth
6. What planet has the most carbon dioxide in
its atmosphere?
Neptune
Venus
Uranus
Mercury
7. Jupiter,
Saturn, Uranus, and Neptune are called the gas giants because their surfaces
are made of gases.
True
False
8. What is the largest planet in our solar
system?
9. The outer planets are called the Jovian
Planets or gas giants.
True
False
10. Uranus has moons.
True
False
11. What two gases mostly make up Jupiter?
oxygen
and helium
oxygen
and nitrogen
hydrogen
and helium
hydrogen
and nitrogen
12. Uranus is tilted so it seems to be on its
side.
True
False
13. Galileo
was the first person to observe Uranus with a telescope.
True
False
T.: Answer the
questions:
Why are outer planets called outer planets?
What are outer planets?
What is outer planets?
Which are outer planets?
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