Earth,sun & Moon
By: Lauren Liston
Earth in space
How does Earth move in space?
The earth's rotation, and revolution is how it moves through space. Earth spins on its axis called, rotating, as it rotates it revolves around the sun. Revolution is when one object goes around another.
What causes the cycle of seasons on Earth?
The Earth has seasons because of earth's tilt as it revolves around the sun. Different parts of earth tilt toward the sun, also the sun hits it at different angles. The middle gets the most direct and the poles get less direct sunlight. Earths revolving is causes summer and winter, the axis is tilted away for half a year as it revolves.
Gravity and motion
What determines the strength of the force of gravity between 2 objects?
The strength of gravity depends on two factors the mass of the objects and the distance between them. If the masses increases, so does force. If distance increases, force decreases.
What 2 factors combine to keep the moon and earth in orbit?
The two factors are inertia and gravity. Gravity keeps pulling towards the moon, at the same time the moon keeps moving ahead with inertia.If not for gravity and inertia the moon would go in a straight line therefore, not orbiting.
Phases, Eclipses, and tides.
What causes the phases of the moon?
Phases are caused by changes in relative positions of the moon,earth and sun. Because the sun lights the moon half the moon is almost always in sunlight, but because the moon revolves around the earth you see the moon in different angles.
Where I Track
What are solar and lunar eclipses?
Solar eclipses are when the moon passes directly between the earth and sun, blocking sunlight from earth then leaving a shadow of the moon of earth. Lunar eclipses is when the earth blocks sunlight from reaching the moon, then the moon is in earth's shadow and earth is dim.
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.
What features are found on the moon's surface?
On moon's surface you can find maria which is dark flat areas, and craters which are long round pit, also you will find highland which are elevated areas on the moon that were created by material that accumulated in layers from the ejects of craters.
What are some characteristics of the moon
The moon is dry and has no air. It is dry because there is no liquid water on moon. When you compare the moon to the earth the moon is small and has big differences in surface temperature.
How did the moon form?
The Earth is thought to have been formed about 4.6 billion years ago by collisions in the giant disc-shaped cloud of material that also formed the Sun. Gravity slowly gathered this gas and dust together into clumps that became asteroids and small early planets called planetesima