Earth Moon and Sun Earth Properties of Earth
- Slides: 33
Earth, Moon, and Sun
Earth
Properties of Earth n Earth is a sphere - As early as 350 BC astronomers thought the Earth could be round - They saw shadows during eclipses and ships on the horizon
Properties of Earth - Sailors were often also astronomers - The study of the moon, stars and other objects in space is astronomy
Properties of Earth - They saw that the stars changed heights in the sky depending on how far north or south they sailed
Properties of Earth - The Earth is not a perfect sphere - It bulges at the equator and flattens at the poles - This is because of gravity and rotation
Properties of Earth n The Earth is rotating - Earth rotates around an imaginary line called an axis
Properties of Earth - This is what causes night and day - One complete rotation takes 24 hours
Properties of Earth n The Earth is revolving - While the Earth is turning on its axis it is also orbiting the sun
Properties of Earth - This orbit is called revolution - The earth takes 365 ¼ days to revolve around the sun
Properties of Earth n The Earth has a magnetic field - Because of rotation of Earth and convection within Earth a magnetic field is generated
Properties of Earth - This creates a magnetic north and south - This magnetic field protects us from harmful solar radiation by trapping particles from the sun
Properties of Earth - When particles from the sun interact with Earth’s magnetic field, a glowing display called an aurora can be seen in the sky This was left out of the packet – you will have to write it in on your own in the top left margin!
Properties of Earth - Magnetic north is found at an 11. 5 o angle to the rotational axis
Properties of Earth - The magnetic field also produces lines of alternating charge in rock at mid-ocean ridges
Seasons on Earth n Orbiting the sun - Earth’s revolution around the sun places the planet at different distances from the sun at different times during the year
Seasons on Earth - It is farthest from the sun around July 4 and closest to the sun around January 3
Seasons on Earth - This is caused by Earth’s elliptical orbit - An ellipse is an oval shape
Seasons on Earth n A tilted axis - Earth’s rotational axis is tilted 23. 5 o - This causes the seasons
Seasons on Earth - Daylight hours are longer for the hemisphere that is titled toward the sun (summer) and shorter if tilted away (winter)
Seasons on Earth - The hemisphere tilted toward the sun also receives more solar radiation
- Andreu cardo martinez
- How does the sun, moon and earth work together
- What season is this
- Diagram of earth moon and sun
- Whats a natural satellite
- Earth sun and moon relationships
- How does the sun moon and earth work together
- Lesson outline lesson 3 eclipses and tides answer key
- Chapter 27 study guide the sun-earth-moon system
- The science duo
- Which moon phase occurs directly before a new moon
- Moon sister moon calendar
- Home.hiwaay.net/ krcool/astro/moon/moon tides/
- Moons pattern
- Spider web tessellation
- Does the sun and moon move
- Moon and sun comparison
- Narakis
- How the sun and moon work
- How to identify personification
- Magic school bus moon phases
- Phases of the moon sun on left
- Moon phases when the sun is on the left
- Sun moon lake marathon
- Hudhud hi aliguyon cordillera
- Sun and earth size comparison
- Earth moon scale
- Why doesn't the moon fall on earth
- 22.3 earth's moon
- Moon compared to earth
- Earth moon
- Earth moon
- The different shapes of the moon you see from earth
- Moon rotation and revolution