Earth is our home planet. Earth is the only planet where life has been found. From space it looks like a big, blue and white ball. Also, some parts are brown, yellow, green and white. The blue part is water. Water covers most of Earth. The brown, yellow and green parts are land. And the white parts are clouds, ice and snow.
Rotation: Earth spins on its tilted axis. It takes 24 hours or 1 day. It produces day and night
Revolution: Earth orbits around the Sun. It takes 365 days or 1 year. It produces the 4 seasons: winter, spring, summer and autumn.
Why is it colder in winter?
The first man to step on the Moon was Neil Armstrong in 1969
On some maps and globes, we can see imaginary lines that go from left to right and top to bottom: horizontal and vertical lines.
The horizontal lines are parallel lines, these indicate the latitude. The most important parallel is the Equator.
The equator divides the Earth into:
The vertical lines are meridians. They indicate the longitude. They run through the poles and across the Equator. The most important meridian is the Greenwich Meridian at 0 degrees.
The longitud of a place measures the distance between the Greenwich Meridian (0º) and any other location on Earth in degrees.
Now Click here to play!!!!
Watch some amazing views of Earth from space:
Planet Earth has two movements:
Earth spins on its axis while it orbits the Sun
Rotation: Earth spins on its tilted axis. It takes 24 hours or 1 day. It produces day and nightRevolution: Earth orbits around the Sun. It takes 365 days or 1 year. It produces the 4 seasons: winter, spring, summer and autumn.
Why is it colder in winter?
Because the Sun´s rays have to travel further to reach the Earth. This is because one of the Earth´s poles tilts away from the Sun every six months as it orbits the Sun. When the North Pole tilts away from the Sun, it is winter in the Northern Hemisphere.
Why is it winter in the Southern Hemisphere when it is summer in the Northern Hemisphere?
Because the North Pole is tilting towards the Sun. There is more daylight and it is warmer in summer than in winter.
On the spring and autumn equinoxes, the Northern and Southern hemispheres receive equal amounts of sunlight. "Equinox" means "equal night".
Galileo Galilei was the first man to say that the planet Earth revolved around the Sun and used the telescope to learn about the Universe.
The first man to formulate that the Earth was not flat but a sphere was Nicolaus Copernicus. He also discovered that the Sun was the center of the Universe not the Earth.
THE TELESCOPE
Galileo Galilei was the first man to say that the planet Earth revolved around the Sun and used the telescope to learn about the Universe.
THE EARTH IS A SPHERE
The first man to formulate that the Earth was not flat but a sphere was Nicolaus Copernicus. He also discovered that the Sun was the center of the Universe not the Earth.
MOON LANDING
The first man to step on the Moon was Neil Armstrong in 1969
LATITUDE AND LONGITUDE
- The Northern hemisphere
and
- The Southern hemisphere
The latitude of a place is its distance from the Equator, measured in degrees. The Equator is at zero degrees latitude (0º). It is the longest parallel.
The longitud of a place measures the distance between the Greenwich Meridian (0º) and any other location on Earth in degrees.
Now Click here to play!!!!
Comments
Post a Comment