mantle

Answer. Earth is called a dynamic planet because there are lot of things happing inside and on the earth . It has an atmosphere that is always changing and cause weather. we have a geologically active core which causes volcanoes and we have geologically active plates that causes earthquakes among other things.

The main dynamical effects are: the kinetic energy of oscillation of the interacting particles, which explains the physical meaning and nature of gravitational forces; separation of shells of a self-gravitating body with respect to its mass density; differences in angular velocities of the shell’s rotation; continuity …

The earth is said to be in a state of “dynamic equilibrium”. There are 2 basic processes: tectonics which builds the earth and surface processes which tear it back down again. Tectonics include volcanoes and earthquakes, and tectonic processes are responsible for plate motions, mountains and so forth.

Earth is a Dynamic Planet Since the Earth’s beginning about 4.5 billion years ago, natural climate and environmental conditions on our planet have been in constant flux.

The five systems of Earth (geosphere, biosphere, cryosphere, hydrosphere, and atmosphere) interact to produce the environments we are familiar with.

Despite our tendency to consider Earth as static, it is actually a dynamic and ever-changing planet. Wind, water, and ice erode and shape the land. Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner.

Earth currently has an axial tilt of about 23.44°. This value remains about the same relative to a stationary orbital plane throughout the cycles of axial precession.

Its axis is tilted about 98 degrees, so its north pole is nearly on its equator. Astronomers suspect that this extreme tilt was caused by a collision with an Earth-sized planet billions of years ago, soon after Uranus formed. Earth’s axis appears stable, but it actually wobbles very slowly, like a spinning top.

Scientists think an Earth without a tilt would be stratified into climate bands that would get progressively colder as you moved away from the equator. Humans would never survive the continuous winter of the high latitudes, and so we would likely congregate in the planet’s tropical midsection.

The movement of the earth affects our lives in many ways. One of this is its affect in the seasonal change of our climate. As the earth’s accelerates, all the things on its surface go along with it, including the air and atmosphere. This is because the force of the gravity holds everything on earth down.

Rotation causes a deflection of ocean and air currents. The earth rotates much faster than the winds or currents move. This causes a large g deflection in the direction that winds move and ultimately results in rotation around low pressure cells and high pressure cells.

The Earth’s rotation affects the movement of water in the oceans. The tides are deflected due to the rotation. The speed of rotation also affects the movement of the wind. Due to rotation, winds and the ocean currents deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

Scientists have concluded more energy is being absorbed from the sun than is emitted back to space, throwing the Earth’s energy “out of balance” and warming the globe. They confirmed the energy imbalance by using precise measurements of increasing ocean heat content over the past 10 years.

This uneven distribution of weight on Earth’s surface is one reason why Earth wobbles on its axis as it spins. Recent research by NASA found that the wobble of Earth as it spins is broken up into three primary factors: glacial rebound, melting of ice, and mantle convection.

Precession of Earth’s rotational axis takes approximately 26,000 years to make one complete revolution. Through each 26,000-year cycle, the direction in the sky to which the Earth’s axis points goes around a big circle. In other words, precession changes the “North Star” as seen from Earth.

This is how, in the last few years, astronomers have discovered hundreds of planets around other stars! Just so you aren’t mislead. Our Sun does wobble because of the planets in orbit about it, but the wobble is VERY tiny and complicated (remember, our Sun has 9 small-ish planets, not one big one).

Our solar system’s barycenter constantly changes position. Its position depends on where the planets are in their orbits. The solar system’s barycenter can range from being near the center of the sun to being outside the surface of the sun. As the sun orbits this moving barycenter, it wobbles around.

Jupiter

Saturn is a funny-looking planet. True, it’s not the only planet with rings. Jupiter, Uranus and Neptune have rings, too. But Saturn’s rings are the biggest and brightest.

Saturn is not the only planet that has a ring system, but it is by far the most prominent. Uranus has a system of five rings (here’s a picture) and Jupiter also has two rings (here’s another).

57 Earths