miles per hour
in one hour you may get to
Stafford.Steady speed!
If you keep on driving after 3 hours you would reach London.
Steady speed - no stops!
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Презентация на тему Sunlight and space travel
Содержание
- 2. DistancesIf you drive on a motorway at
- 3. If we could keep on and on
- 4. Light and heat comes from the
- 5. Light travels very, very fast!Guess how long
- 6. It takes 8 minutes
- 7. Shadows Light travels in a straight line.If
- 8. ShadowsHow do they form?Sun
- 9. We can make shadows !- by blocking
- 10. Day and NightA day + a night
- 11. The Earth is a ball (or sphere)The
- 12. Day and nightDaylight in the UKLight from the SunDark in ChinaDusk in IndiaLightDark
- 13. At midday hereIt is dawn in the USAIt is dusk in India
- 14. As the Earth spins the position
- 15. Shadows move during the dayWatch the shadow
- 16. The Sun appears to move across the
- 17. The Solar Pyramid will act as a sundial
- 18. The seasons: the Sun provides light
- 19. Summer and winterIn winter the Sun stays
- 20. Summer and winterThe earth is tipped as
- 21. The MoonThe Moon
- 22. The MoonThe Moon is not a source
- 23. The Moon travels round the EarthSunlightEarthno Moon is seennew Moonhalf MOON or first quarterfull Moonlast quarter
- 24. Bad astronomy in filmsWhat is wrong with
- 25. The MoonThe Moon is very much smaller
- 26. Sometimes the Sun does not shine during
- 28. An eclipse of the SunWhen the Moon
- 30. An Eclipse of the MoonFull Moon: the
- 31. What have we learned?
- 32. Space explorationSolar transitof the International Space Station
- 33. Larger!Space shuttleSpace station
- 34. The girl who named Pluto In 1930,
- 35. New Horizons at Pluto (simulation) It travels past Jupiter at a speed of 21 km each secondNASA
- 36. Скачать презентацию
- 37. Похожие презентации
DistancesIf you drive on a motorway at 70 miles per hourin one hour you may get to Stafford.Steady speed!If you keep on driving after 3 hours you would reach London.Steady speed - no stops!
Слайд 2
Distances
If you drive on a motorway at 70
miles per hour
Stafford.Steady speed!
If you keep on driving after 3 hours you would reach London.
Steady speed - no stops!
Слайд 3 If we could keep on and on -
-
If you could drive to the Moon
at
70 miles per hour,230,000 miles or about 400,000 km
it would take you 3400 hours,
or 140 days.
Слайд 4
Light and heat
comes from the Sun
It is
a long way away !
146 million km or
93 million miles If you could drive to the Sun at 70 miles per hour
it would take over 50 000 days.
= 150 years
– longer than we live !
Слайд 5
Light travels very, very fast!
Guess how long it
takes for light to
come from the SUN to
the Earth.8 years
8 days
8 hours
8 minutes
Слайд 6 It takes 8 minutes for light to reach
us from the Sun!
Light travels 300 000 kilometres through
space every second!
Слайд 7
Shadows
Light travels in a straight line.
If something gets
in its path the light is blocked.
A shadow is
formed.
Слайд 9
We can make shadows !
- by blocking out
the light.
Changing positions varies the size of the shadow.
If
you are close to the lamp, the shadow is large.If you are close to the screen, the shadow is smaller.
Слайд 10
Day and Night
A day + a night =
24 hours
365 of these makes 1 year.
The Earth takes
1 year to orbit the Sun.(What does ‘orbit’ mean?)
Слайд 11
The Earth is a ball (or sphere)
The Sun
cannot shine on both sides of the Earth at
the same timeSome of the Earth is bright - day
Some is dark – night
The Earth spins so each part has day and night.
Слайд 14 As the Earth spins the position of the
Sun varies.
Morning – the sun rises - it is
light.The Sun gets higher in the sky.
Then the Sun sinks and sets.
Слайд 15
Shadows move during the day
Watch the shadow of
the stick
to tell the time
like a sundial.
stick
6.00 pm
12.00
noon6.00 am
Слайд 16
The Sun appears to move across the sky
as
it moves shadows move.
A stick in the ground has
a shadow. A sun dial uses this.
The solar pyramid is like a huge stick.
Its shadow moves to show the time.
Слайд 18 The seasons: the Sun provides light and heat
but -
winter is cold
summer is warmer
What causes this?
Слайд 19
Summer and winter
In winter the Sun stays low
in the sky.
In summer the Sun rises higher in
the sky.Winter
Summer
The horizon
Слайд 20
Summer and winter
The earth is tipped as it
spins
Light and heat reach the Earth at different angles
in summer and winterIn winter the light and heat from the Sun is more spread out than during the Summer.
It feels colder
We can try an experiment.
Sun
Summer
Winter
Beam of light
Earth
Earth
Слайд 22
The Moon
The Moon is not a source of
light.
Light from the Sun shines on the Moon. Some
light is scattered so we see it on Earth.The Moon takes about
28 days to move round the Earth.
It always shows Earth the same side.
The shape we see changes
during the 28 days- a lunar month.
Слайд 23
The Moon travels round the Earth
Sunlight
Earth
no Moon is
seen
new Moon
half MOON or first quarter
full Moon
last quarter
Слайд 24
Bad astronomy in films
What is wrong with –
the
Moon looking the same for 3 or 4 nights?
lots
of stars visible at full Moon?showing lots of stars out of the window of a brightly lit room?
the shadow line at Sun-rise looking sharp?
Слайд 25
The Moon
The Moon is very much smaller than
the Sun.
But the Moon is very much closer than
the Sun.They both look the same size in the sky.
eye
Слайд 26 Sometimes the Sun does not shine during the
day.
Even when it is not cloudy!
Let us play a
game.Shut one eye
Hold the Moon card so that you cannot see the Sun.
NASA
Слайд 28
An eclipse of the Sun
When the Moon stops
the light from the Sun reaching the Earth
We call
it an eclipse.During an eclipse, it goes dark in the middle of the day.
An eclipse of the Sun is rare and happens at a new Moon.
Слайд 30
An Eclipse of the Moon
Full Moon: the Earth
is between the Moon and the Sun.
Light gets to
the Moon because they are not in line.The Earth sometimes blocks out the sunlight from reaching the Moon.
Then we cannot see the Moon (in position 3).
This is an eclipse of the Moon.
sunlight
Earth’s shadow
1
2
3
4
Слайд 31 What have we learned? (Sunlight
takes 8 minutes to reach the Earth.)
Shadows form when
light is blocked out.Night is when no sunlight reaches us.
We can tell the time by shadows.
In winter the Sun is low in the sky.
The moon reflects light to the Earth.
Its shape changes because of shadows.
Eclipses happen when light is blocked out.
- all shadows!
Слайд 32
Space exploration
Solar transit
of the International Space Station and
Space Shuttle Atlantis
(50 minutes after undocking from the
ISS, before return to Earth)
Слайд 34
The girl who named Pluto
In 1930, Pluto
was discovered.
Venetia Burney, aged 11, named it Pluto.
She
was born in 1919 and, is the only person in the World who named a planet- although it is not classified as a planet now.On 17 January 2006, NASA launched New Horizons, the first space mission to Pluto.
It will reach Pluto in July 2015
NASA
Слайд 35
New Horizons at Pluto (simulation)
It travels past Jupiter
