© Boardworks Ltd 2004 1 of 20 © Boardworks Ltd 2005 1 of 58 Astronomy Phases of the Moon and...
-
Upload
silvester-gordon -
Category
Documents
-
view
225 -
download
6
Transcript of © Boardworks Ltd 2004 1 of 20 © Boardworks Ltd 2005 1 of 58 Astronomy Phases of the Moon and...
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20051 of 58
Astronomy
Phases of the Moon and Eclipses
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20052 of 19
The Sun and the Moon look about the same size from Earth, but they are not.
The Sun is about 400 times wider than the Moon but is 400 times further away!
The Moon takes just over 27 days to orbit the Earth.
sun
ligh
t
The Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20053 of 19
sun
ligh
tThese are called the phases of the Moon
These are the views of the Moon from Earth.
The Phases of the Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20054 of 19
This is the view of the Moon from Earth.
new Moon
The Phases of the Moon – new Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20055 of 19
This is the view of the Moon from Earth.
Waxing crescent
The Phases of the Moon – crescent Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20056 of 19
First quarter
This is the view of the Moon from Earth.
The Phases of the Moon – half Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20057 of 19
This is the view of the Moon from Earth.
Waxinggibbous
The Phases of the Moon – gibbous Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20058 of 19
This is the view of the Moon from Earth.
full Moon
The Phases of the Moon – full Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20059 of 19
This is the view of the Moon from Earth.
Waninggibbous
The Phases of the Moon – gibbous Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200510 of 19
This is the view of the Moon from Earth.
Lastquarter
The Phases of the Moon – half Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200511 of 19
This is the view of the Moon from Earth.
Waningcrescent
The Phases of the Moon – crescent Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200512 of 19
Phases of the Moon activity
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200513 of 19
Lunar Phase Simulator
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200514 of 19
1. The Moon does not produce its own light - how can we see it?
2. How long does it take the Moon to orbit the Earth?
3. Why do we always see the same side of the Moon?
4. Why do we only see a full Moon once a month?
5. What is a new Moon?
6. What forces keeps the Moon in orbit around the Earth?
Hypothesize: How does the Moon causes tides?
Questions about the Moon
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200515 of 19
A solar eclipse happens when the Moon passes between the Sun and the Earth. This casts a shadow over the Earth.
Solar eclipses do not occur very often.
A lunar eclipse happens when the Earth passes between the Sun and the Moon. This casts a shadow over the Moon.
Lunar eclipses happen in most years.
Eclipses
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200516 of 19
Where must the Moon be for a solar eclipse to take place?During a solar eclipse the Moon moves directly between the Sun and the Earth.
What happens during a solar eclipse?
During a solar eclipse the Moon blocks the Sun’s rays from reaching part of the Earth.
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200517 of 19
Where must the Moon be for a lunar eclipse to take place?During a lunar eclipse the Moon is on the opposite side of the Earth to the Sun.
What happens during a lunar eclipse?
During a lunar eclipse the Earth blocks the Sun’s light from reaching the Moon.
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200518 of 19
Eclipses
The penumbra is an area partial shadow and will result in a partial eclipse
The umbra is an area of total shadow and will result in a total eclipse
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200519 of 19
1. Why do eclipses only last a few minutes?
2. Why do you think ancient people were frightened of eclipses?
3. What causes an eclipse of the Sun (a solar eclipse)?
4. What causes an eclipse of the Moon (a lunar eclipse)?
5. What would a lunar eclipse look like if you were an astronaut standing on the Moon?
Questions about eclipses