Planet Earth

Antarctica when it is ice free. Otherwise it is Australia.

Egypt is a country that spans both Africa and Asia.

Mars and Earth orbit the Sun at different speeds and distances. At certain points in their orbits, Mars can be in front of Earth (when it is closer to the Sun) and at other times it can be behind Earth (when Earth is closer to the Sun). The relative positions of Mars and Earth change constantly due to their orbital motion.

Yes, in the distant past, Earth's original atmosphere was rich in hydrogen and helium. However, much of these gases escaped into space due to Earth's gravity not being strong enough to hold onto them, and over time, the atmosphere evolved to its current composition with nitrogen and oxygen being the predominant gases.

It takes approximately 365.25 earth days of 24 hours each to complete one orbit around the sun.

In calendars we just state 365 days, and we make up for the 0.25 days omitted in this calculation once every four years. This is called the 'leap year', where we have 366 days instead, with an extra day in February.

Yes, Earth has rilles, which are long, narrow valleys or channels on the surface. Rilles are often created by flowing lava or water erosion. An example of rilles on Earth can be seen in the Moon-like landscape of the volcanic island of Lanzarote in the Canary Islands.

RPM = revolutions per minute

0,000694rpm -> considering that the Earth rotates in 24 hours

0,000696rpm -> considering that the Earth rotates in 23h and 56 minutes (which is the real time in which the Earth makes 1 revolution)

therefore in general its .00069

The ozone layer acts as Earth's sunscreen by absorbing and filtering out much of the sun's harmful ultraviolet (UV) radiation. It protects living organisms from the damaging effects of excessive UV radiation, such as skin cancer and cataracts.

The furthest planet from the sun is Neptune.

In 1937, earth scientists John Boon and Claude Albritton Boon were the first to suggest that the Vredefort structure was the scar of an ancient meteorite impact.

Earth has a unique combination of factors that make it habitable for life, such as the right distance from the Sun, presence of liquid water, and a protective atmosphere. Other planets may not have these conditions, making it difficult for life to thrive. Additionally, we have not yet found definitive evidence of life on other planets.

The rotation of Mars is very similar to the rotation of earth. Its axial tilt, the length of its day, and the direction of its rotation are all very similar to those of earth.

According to Wikipedia's list of active soldiers per country (this can be unreliable and constantly changing) the total amount of active soldiers listed are 20,248,094 with an aparent 61.2 million in reserve and a further 7.6million as paramilitary making a grand total of nearly 90 million.

These areas are called intertidal zones or the intertidal region. They are located along coastlines and experience regular changes in water level due to the tides, resulting in periods of submersion and exposure. Organisms in these zones must be able to tolerate both marine and terrestrial conditions.

That's the observer's 'zenith'. Since it's referenced to the

"observer's head", each observer has a different zenith.

The distance from the sun affects a planet's temperature, which is crucial for supporting life. Being too close can result in extreme heat that would evaporate water and make life unsustainable, while being too far can lead to freezing conditions. The ideal distance allows for moderate temperatures that can support the presence of liquid water, a key element for life as we know it.

The sun appears larger and more orange in color during the evening due to light passing through more of the Earth's atmosphere. This scattering of light causes the sun to look different compared to when it is higher in the sky during the day.

Galileo Galilei, an Italian astronomer, physicist, and mathematician, was the one who famously championed the idea that the Earth revolved around the sun. His work faced backlash from the Catholic Church and he was ultimately forced to recant his findings under threat of excommunication.

There is no planet in the solar system which has more water than earth. Europa (a moon of the planet Jupiter) is thought to have a liquid ocean under a mantel of ice, but this moon is no larger than our own moon.

"Kashmir" in India is often referred to as the "paradise on Earth" due to its breathtaking natural beauty, including snow-capped mountains, lush valleys, and serene lakes.

1. Foucault Pendulum: The changing direction of the pendulum's swing demonstrates the rotation of Earth beneath it.
2. Coriolis Effect: The deflection of moving objects like air currents and ocean currents is caused by Earth's rotation.
3. Day-night cycle: The cycle of day and night is a direct result of Earth's rotation on its axis.

If it didn't, the Earth would keep getting hotter and hotter. We would have to find a way to get rid of some of the heat. As it is, we have roughly an energy balance where we retain about as much energy as leaves the system, and that keeps temperature roughly constant.

The value of the acceleration due to gravity (g) depends on the mass of the Earth and the distance from its center. As an object moves away from Earth, the value of g will decrease because the gravitational force weakens with distance.