How has the earth changed over time?

Earth and its atmosphere are continuously altered. Plate tectonics shift the continents, raise mountains and move the ocean floor while processes not fully understood alter the climate. Such constant change has characterized Earth since its beginning some 4.5 billion years ago.

What are the most interesting facts about Earth?

10 interesting things about Earth

• Earth is not flat, but it’s not perfectly round either.
• The days are getting longer.
• There weren’t always several continents.
• Earth’s icy times.
• The driest place on Earth.
• Earth’s gravity isn’t uniform.
• In the past, sea levels were very different.
• Our sun has a voracious appetite.

What year was Earth Day?

April 22, 1970 (United States)
Earth Day/Date of first occurrence

What are 10 interesting facts about the Earth?

1 Introduction. 2 We’re the third rock from the sun. 3 Earth is a squashed sphere. 4 The planet has a waistline. 5 Earth is on the move. 6 The planet moves around the sun. 7 Earth is old. 8 The planet is recycled. 9 Our moon quakes. 10 Alaska had the largest earthquake.

What are the characteristics of Earth?

Our home, Earth, is the third planet from the sun and the only world known to support an atmosphere with free oxygen, oceans of liquid water on the surface and — the big one — life. Earth is one of the four terrestrial planet: Like Mercury, Venus and Mars, it is rocky at the surface.

What are 5 interesting facts about the Moon?

The moon (radius – 1,738 kilometer) is the fifth largest moon in the Solar System after Ganymede (orbits: Jupiter), Titan (orbits: Saturn), Callisto (orbits: Jupiter), and Io (orbits: Jupiter). 15. The Moon reflects Sun’s light on the Earth when the Sun is on the other side of the Earth meaning when there is the night on one side of the planet. 16.

Why does the Earth appear round from space?

This variation is too tiny to be seen in pictures of Earth from space, so the planet appears round to the human eye. Recent research from NASA’s Jet Propulsion Laboratory suggests that melting glaciers are causing Earth’s waistline to spread. The length of Earth’s day is increasing.