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Unit 3A Lesson 7

Eclipses and Tides

QuestionAnswer
How does a solar eclipse happen? The moon passes between the sun and the earth and the moon casts a shadow on the Earth.
Why does a solar eclipse happen? The moon passes between the sun and Earth so it blocks the sunlight from reaching the Earth's surface
How does a lunar eclipse happen? The Earth passes between the sun and the moon and casts a shadow on the moon.
Why does a lunar eclipse occur? The Earth passes between the sun and the moon so it blocks the sunlight from hitting the moon's surface.
What tool did Galileo use to see the moon more clearly in the early 1600s? A telescope
During which phase of the moon does a solar eclipse occur? The New Moon phase, because the moon is in front of the Earth.
What can occur during the Full Moon phase? A lunar eclipse because the moon is behind the Earth and can pass through Earth's shadow.
What is an umbra? An umbra is the shadow that is cast during an eclipse.
The moon passes through the Earth's umbra during which type of eclipse? During a lunar eclipse
The Earth passes through moons umbra during which type of eclipse? During a solar eclipse
What does the surface of the moon look like? There are wide dark areas , spots and ridges.
What are Maria? These are the large dark areas on the moon that are formed by an ancient lava flow.
What are craters? These are large 'dents' or pits on the moon created by meteorites or other space debris crashing into the moons surface.
What are the phases of the moon? (In the correct order) New moon. waxing crescent moon, waxing gibbous moon, full moon, then waning gibbous moon , waning crescent moon back to new moon.
What does the term Waxing mean? It means that the amount of the moons surface that we can see is slowly growing larger (increasing.)
What does the term Waning mean? It means that the amount of the moons surface that we can see is slowly getting smaller (decreasing.)
Which one of the moons phases is the only one in which we cannot see the light reflecting from the moons surface? During the new moon.
Why do we experience seasons? Because the Earth is tilted and different portions of the Earth receive more direct sunlight during different parts of the year.
When it is winter in the northern hemisphere, what season is it in the southern hemisphere and why? In the southern hemisphere it is summer because the southern hemisphere is tilted toward the sun receiving direct sunlight but the northern hemisphere is tilted away from the sun and receives sunlight at an angle (indirect sunlight)
How can you raise your grade in science? Attend a Science LiveLesson on Fridays at 11am.
What should you do if you got a bad grade on a portfolio? Re-do your portfolio.
Where can you go if you need help with a portfolio? Check the Message board to watch the portfolio recordings or and/or attend a science LiveLesson on Fridays at 11am.
Created by: scanto
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