Programs
Planet Earth
Which planet is Earth counted from the Sun?
1/8
It's the third planet
It's the first planet
It's the fourth planet
Which of the following elements is most present in Earth's atmosphere?
2/8
Nitrogen
Hydrogen
Oxygen
How many years ago was our planet formed?
3/8
4,540,000,000 years ago
6,000 years ago
1,000 years ago
What causes tides on Earth?
4/8
The motion of Earth in its orbit
The gravitational influence of the Moon
The changes in the amount of water in the ocean
Why did dinosaurs go extinct?
5/8
Like the mammoths, they were destroyed by ancient people
The planet ran out of oxygen at some time in the past.
Because an asteroid or comets fell down
What is the name of the supercontinent, once uniting the entire land of Earth?
6/8
Terra
Eurasia
Pangaea
Why does water not flow out into space?
7/8
Because of strong winds in the ocean
Because of the influence of gravitational forces
Because of the presence of deep depressions in the ocean
Why are ozone holes formed on Earth?
8/8
Because of reduction of oxygen on the planet
Because of space debris thrown into the atmosphere of Earth
Because of the pollution of the natural environment by humans
THE ANSWER IS:
Earth is the third planet from the Sun. The closest planet to the Sun is Mercury.
OK
THE ANSWER IS:
Nitrogen. The percentage of nitrogen in Earth's atmosphere is equal to 78%.
OK
THE ANSWER IS:
Scientists believe Earth is 4.54 billion years old. By the way, the other planets of the Solar system and the Sun are also of the same age.
OK
THE ANSWER IS:
The Sun, the Moon and other bodies in the Solar system affect the water and land of Earth by the force of gravity. However, due to its proximity to Earth, the Moon affects tides to a greater degree.
OK
THE ANSWER IS:
Dinosaurs disappeared from the earth about 65 million years ago. According to the most accepted theory, the cause of the "great extinction" was the strike by the fall of an asteroid or a comet.
OK
THE ANSWER IS:
Pangaea. Millions of years ago, planet Earth had only one continent, which later split under the influence of the movement of Earth's crust.
OK
THE ANSWER IS:
Under the influence of gravitational forces. It is gravity that allows water to not evaporate. If the force of gravity were less, all water would have disappeared from Earth.
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THE ANSWER IS:
Ozone holes are formed for many reasons, but the most essential is the pollution of the natural environment by humans. The ozone layer depletion increases the flow of solar radiation, which in turn can lead to the death of plants and animals. The influence of ozone holes on humans results primarily in the spread of skin cancer. Scientists have estimated that if the concentration of ozone in the atmosphere drops by at least 1%, the number of cancer patients will increase by approximately 7,000 people per year.
OK
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