No, when the Earth first formed it was molten, it had to cool before liquid water could collect in its surface. There is also a thought that Earth's water may not have formed form the initial materials making up the Earth but been delivered to the Earth by comet or asteroids impacting the Earth later.
The shielding of Earth from ultraviolet rays began when the ozone layer formed around 2.4 billion years ago. This layer absorbs and scatters a significant portion of the Sun's ultraviolet radiation, protecting life on Earth from its harmful effects.
baltic area
Nope. As soon as you see the symbol for calcium, you know an ionic compound is being formed.
The Earth is about 4.5 billion years old and has had an atmosphere since it formed, but about 3.8-4.1 billion years ago there was believed to be the Late Heavy Bombardment, where a planetesimal roughly the size of Mars hit the Earth, breaking off a large chunk that formed into the Moon. This impact would have obliterated the atmosphere, but it has reformed naturally since then. So, the answer to your question is approximately 4 billion years old.
Yes, we get in a muddle and all have a cuddle.
The earth formed and let of carbon, oxygen, and other gases. Those gases collected and formed the atmosphere. When the Earth cooled, some hydrogen and oxygen bonded to make water vapor. Soon we had lakes, then oceans, and then life.
The amount of water on Earth is finite - most of it is held in the oceans. For a flood to occur, it has to rain; for it to rain, the water in the oceans has to evaporate to form clouds. Floods can occur in limited regions when the rainfall is much greater than normal, but the water soon runs off, back into the ocean. Of course, it would not be possible for a flood to cover the entire earth, both because there is not enough water and because the floodwaters would run back into the oceans so quickly.
droplets need to get big and heavy before they fall
Earth's moon is believed to have formed when Earth collided with a Mars-sized planetoid soon after it formed. Debris from the collision formed a ring around Earth and coalesced into the moon. Scientists still disagree about the origins of Mars' moons Phobos and Deimos. The most prevalent hypothesis is that they are captured asteroids.
Yes, a higher form of energy will visit us very soon
Airplane's contrails do not form clouds; they dissipate soon after they are formed.
The shielding of Earth from ultraviolet rays began when the ozone layer formed around 2.4 billion years ago. This layer absorbs and scatters a significant portion of the Sun's ultraviolet radiation, protecting life on Earth from its harmful effects.
NO, the new series is coming out on nickelodeon soon...
Sort of. A tornado warning means that either a tornado has already formed or may form very soon.
baltic area
The sun was formed after a high concentration of hydrogen and helium collapsed in upon itself soon after the big bang and began fusing the atoms.
Depending on how it's used, it can be a verb or not a verb.Verb:Form can be used as a verb: Jacob spent a few minutes thinking, so that he could form a complete sentence.Noun:Form can be used as a noun: "Please fill out the form below, and we'll get to you as soon as possible!"