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Shout-out to Megan! Her version of what the moon would look like in a month (after a full orbit around the Earth) is different from everyone else's drawings.

To make question 2 even better, she should show how she got her correct answer with a jot or labels in the diagram.

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Shout-out to Arihdni! Her jots show that she is double-checking her answers, and that she is thinking about what the question is asking her to do.

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Diagram of the Earth's seasons - Stock Image - C012/5188

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Earth's orbit showing seasons. Computer diagram of the Earth's orbit around the Sun, showing how the planet's tilted axis gives rise to the seasons. MARK GARLICK/SCIENCE PHOTO LIBRARY

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Seasons and the Sun: Crash Course Kids 11.1

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Earth rotates around its axis on a tilt, which is partly why we experience seasons during our year-long orbit around the sun.

Because of our tilt, and because of Earth's revolution around the sun, some days receive more direct sunlight than other days where we live in the Northern Hemisphere.

In position 1, the Northern Hemisphere receives more direct sunlight in a day - that means we are in summer.

In position 3, however, the Northern Hemisphere receives less direct sunlight each day - that means we are in winter.

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Our Solar System (NASA!) - explore different planets on this website.

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Key Takeaways:

Other planets in the solar system share common behaviors with Earth.

All of the other planets in our solar system rotate on their axes and revolve around the Sun. Planets have different speeds of their movements, so their days and years are different amounts of time than on Earth.

Some other planets have moons that revolve around them like Earth’s moon does.

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Overview Since 1998, NASA's Solar System Exploration hub has served as a real-time, living encyclopedia of the scientific exploration of our solar system. We provide reliable, accurate, up-to-date information about the planets, moons, asteroids, comets, and everything else in our solar system and the spacecraft that explore them.

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Notice how the sunlight that is not shining directly onto the Earth is hitting the Earth's surface at an angle, which causes shadows to form. The hottest sunlight on Earth is the direct sunlight.

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Parents and guardians, please refer to this unit-specific content guide for extra support during at-home practice.

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Key Takeaways:

Moon phases are caused by the position of the moon relative to the Sun and the Earth.

The moon reflects the Sun’s light.

The moon continuously cycles through the same phases in a predictable order. The moon phases follow a predictable cycle because the moon is revolving around the Earth.

It takes 29.5 days, or about one month, for the moon to complete one revolution around the Earth.

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LESSONS 4-6: seasons, and Earth's revolution

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LESSONS 4-6: seasons, and Earth's revolution

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Key Takeaways:

When we receive the most direct sunlight, we experience summer. When we receive the least direct sunlight, we experience winter.

The equator is an imaginary line that divides the Earth into two halves horizontally, the northern hemisphere and the southern hemisphere. The equator receives more direct sunlight than the Earth’s poles each year. This creates warmer climates near the equator (and colder climates near the North and South poles).

Seasons are characterized by their temperature, which is directly related to the amount of sunlight a location receives during that time of year.

Earth’s revolution around the sun (every year, approximately) and its tilted axis are responsible for the seasons we experience. Different parts of the Earth receive a different amount of daylight hours.

In December, when the Northern Hemisphere is tilted away from the Sun, we experience winter. In June, when it is tilted toward the Sun, we experience summer. The Southern Hemisphere experiences its seasons opposite the Northern Hemisphere.

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LESSONS 1-2: direct sunlight, apparent motion, and Earth's rotation

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LESSONS 1-2: direct sunlight, apparent motion, and Earth's rotation

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Key Takeaways:

The Sun’s apparent motion is actually caused by Earth’s movement. The sun appears to move, but relative to the Earth and the other planets, it is stationary. Earth’s movement is responsible for how shadows change.

Shadows are created when an object blocks a light source. Shadows outside change throughout the day because of Earth’s movement.

The Earth makes a complete rotation around its axis every 24 hours, causing our shadows to change throughout the day.

We see the longest shadows at sunrise and sunset and the shortest around noon (midday) when there is direct sunlight above us.

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- Lesson 4 Exit Ticket, due Monday 1/10
- Lesson 5 Exit Ticket, due Tuesday 1/11
- Lesson 6 Exit Ticket, due Wednesday 1/12
- Lesson 8 Exit Ticket, due Thursday 1/13
- Lesson 9 Exit Ticket, due Friday 1/14

(We are skipping lesson 7 this week)

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Work Expectations - using the Science Plan to Solve

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Work Expectations - using the Science Plan to Solve

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Remember to show your full thinking on every assignment by following these steps!

1) Mind Movie - after reading the problem carefully, I will ask myself: what scientific facts are important to this story? (jot/underline important information!)

2) Unpacking the Question - after reading the question carefully, I will ask myself: what scientific facts is this question asking me to think about? (keep jotting/underlining if it helps!)

3) Text Features - now that I've read the problem and the question, I will go back to the text features in the story and think: what scientific evidence is going to help me answer the question?

4) Double-Check: Before the timer goes off, I will ask: did I read every word and follow every direction?

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Vocabulary (click on mountain for flash cards)

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Vocabulary (click on mountain for flash cards)

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apparent motion - something that looks like it’s moving

direct sunlight - when the Sun shines directly on something, heating it up more, than if it shines at an angle

season - a division of the year

rotation - the spinning motion of the Earth on its tilted axis. Earth rotates 1 time every 24 hours.

celestial body - a natural object that is located outside of the Earth’s atmosphere such as the moon, Sun, stars, and other planets

axis - an imaginary straight line passing through the North Pole, the center of the Earth, and the South Pole. The Earth rotates on its axis.

tilt - a slanted position

revolution - the Earth’s orbit path around the Sun; Earth revolves about once every 365 days

orbit - the path an object takes when it revolves around another object

hemisphere - half of the Earth, usually divided into northern and southern halves by the equator

poles - the places on Earth’s surface that Earth’s imaginary axis passes through

equator - an imaginary line around the Earth that separates the northern and southern hemispheres

moon phase - moon phases change as the moon orbits the Earth. As it orbits the Earth, we see different parts of the moon lit.

shadow - a dark area or shape that is created when an object comes between rays of light and a surface

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4th grade unit 4 vocabulary words Learn with flashcards, games and more — for free.

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What would happen if the earth stopped moving?