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3rd Grade Science Lesson
Transcript of 3rd Grade Science Lesson
Students will understand that the shape of Earth and the moon are spherical and that Earth rotates on its axis to produce the appearance of the sun and moon moving through the sky.
Describe the appearance of Earth and the moon.
The Earth and The Moon
The "waning" in this phase refers to the decrease in the amount of visible moon. "Gibbous" means that more than half of the surface is still visible.
We're almost there! The Moon has almost completed its cycle around the Earth. Once again, just a small portion of the Moon is visible. Because the Moon is nearly perfectly in line with the Earth and the Sun, the Crescent is only visible in the early morning hours
The Moon is now 3/4 of the way through its cycle! Half of the side of the moon facing the Earth is again visible. The last quarter occurs about 3 weeks after a new moon
The side of the moon facing the Earth is completely visible because that side is illuminated by the Sun. The Moon is now halfway through its cycle around the Earth.
When the Earth and the Moon is directly between the Sun and the Earth. This is called the New Moon. This is the beginning of the cycle.
After the New Moon comes the Waxing Crescent. More of the surface of the moon is illuminated but it is still less than half of the surface.
It's important to remember that a "quarter moon" doesn't refer to the amount of illumination we can see, but it actually refers to how far the moon is in its cycle around the Earth.
This phase comes about 2 weeks after the New Moon. The moon is relatively far away from the Earth at this point. It is mostly illuminated but not completely.
WOW! We made it! We have learned about the different phases of the the Moon and why we can only see different parts of the Moon during each week of the month! Great Job everyone!!!
What have we learned?
What will we be learning today?
Today we will learn about the relationship between the Earth, the Sun and the Moon.
1. We know that the Earth, the Sun and the Moon are all round, but they are actually shapes called spheres. A perfect example of a sphere is a ball.
2. It is important to remember that when we see the Moon in the sky, that the moon does not emit (give off) light of its own, but that it is actually lit up by the Sun, just like the Earth!
3. We see the Moon changing throughout the month because of different ways that the Sunlight shines on it. Let's learn about those differences now!
What are some of the differences between the Earth and the Moon as seen from space?
Photos of the Moon: http://visual.merriam-webster.com/astronomy/celestial-bodies/moon/phases-moon.php , http://www.space.com/55-earths-moon-formation-composition-and-orbit.html
Photos of the Earth: http://airandspace.si.edu/etp/earth/