What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an...

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What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs.

Transcript of What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an...

Page 1: What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs.

What causes an eclipse?• When the moon’s shadow hits Earth or

Earth’s shadow hits the moon, an eclipse occurs.

Page 2: What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs.

What causes a solar eclipse?• A solar eclipse occurs when the moon

passes directly between Earth and the sun, blocking sunlight from parts of Earth. (p. 674)

• What phase of the moon is this?• Ex: personal, question, etc.

Page 3: What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs.

When is the next solar eclipse?

• Nov 13, 2012• Total - Will be

visible in Australia, New Zealand, South Pacific and Southern South America.

Page 4: What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs.

What causes a lunar eclipse?• During a lunar eclipse, Earth blocks sunlight

from reaching the moon. (p. 675)• Ex: personal, question, etc.• What phase of the moon is this?

Page 5: What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs.

Why don’t we have eclipses once a month?

• The orbit of the Moon is tilted by about five degrees with respect to the Earth’s orbit, so that usually the Moon passes slightly above or below the line between the Sun and the Earth.

• At most new and full Moons, the shadows miss their mark and no eclipse occurs. Only about every six months, during an eclipse season, are the conditions right for a lunar or solar eclipse.

Page 6: What causes an eclipse? When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs.

When is the next lunar eclipse?

• Nov 28, 2012

• Penumbral - Will be visible in Europe, East Africa, Asia, Australia and the Pacific.