Earth moves in space in 2 ways: rotation and revolution A rotation is the spinning on Earth's axis. a revolution is the movement of one object around another. For instance the Earth moves around the sun. One revolution for Earth around the sun takes 365 25 days or one year. The reason Earth stays in motion in space is because there is nothing to stop or slow it down this is called inertia.
What causes the cycles of seasons on Earth?
The yearly cycle of seasons are caused by the tilt of Earths axis as it revolves around the sun. If Earths axis was straight up and down relative to its orbit, temperatures would remain relativity the same. There would be no seasons. Summer and winter are caused by Earths axis is it revolves around the sun. In matter of fact Earth is farthest away from the sun in summer in the northern hemisphere.
Section 2: Gravity and motion
What Determines the strength of the force of gravity between 2 objects
The strength of the force of gravity between two objects depends on two factors: the masses of the objects and the distance between them. The force of gravity is measured in units called newtons. The strength of gravity is affect by the distance between the two objects as well as their masses.
What 2 factors combine to keep the moon in Earth's orbit?
Newton concluded that 2 factors - inertia and gravity - combine to keep Earth in orbit around the sun and the moon in orbit around the Earth. Considering that there is no gravity in space there is nothing to stop it or slow it down,
Section 3 Phases Eclipses and tides
What causes the phases of the moon?
The changing relative positions of the moon, Earth , and sun cause the phases of the moon. The moon orbits around the earth causing it to change positions. The amount of moon you see depends on how much sunlit side of the moon faces earth. You see the moon at different angles because of its orbit.
What are solar and lunar eclipses?
An eclipse is an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.
What causes the tides?
Tides are periodic rises and falls of large bodies of water. Tides are caused by the gravitational interaction between the Earth and the Moon. The gravitational attraction of the moon causes the oceans to bulge out in the direction of the moon.
Section 4 Earth's Moon
What features are found on the moon?
Since the Earth's moon doesn't have a significant atmosphere, nothing can stop even the smallest meteoroids from striking its surface. As a result, the lunar surface is heavily cratered. As a matter of fact, tiny craters are quite common even on lunar rocks. This was observed on the Moon rocks brought home by the Apollo missions
What are some characteristics of the moon?
A moon is a large body or mass or material that orbits around a planet. It is usually much smaller than the planet. The Earth has only one moon, while Mars has two moons and Jupiter has 9 moons.Our Moon is only about 1/4 the diameter of the Earth. Its gravity affects the Earth's tides. The Moon looks bright at night because of sunlight that is reflected off its surface. It has some distinct surface features that can be seen with the naked eye. Astronauts examined the surface more closely during Moon landings.
How did the moon form?
Facts about lunar formation: The moon was formed~4.5 billion years ago, about 30–50 million years after the origin of the Solar System, out of debris thrown into orbit by a massive collision between a smaller proto-Earth and another planetoid, about the size of Mars.