Earth are very special planet Flashcards

1
Q

What are the three types of geographies?

A

There are physical geography Human geography and Environmental Geography

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2
Q

What is Atmosphere?

A

The layer of gas around the earth

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3
Q

What is Gravity?

A

The force of attraction that holds planets in the solar system,and holds us on Earth

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4
Q

What is a Solar system?

A

Made up of our sun,the planets,their moons and asteroids and floating objects

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5
Q

What is Asteroid?

A

Asteroids are small, rocky objects that orbit the sun

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6
Q

What is Oxygen?

A

A Oxygen is a nonmetallic element that exists in its free form as a colorless,odorless gas and makes up about 21 percent of the Earth’s atmosphere

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7
Q

What is Carbon dioxide?

A

Carbon dioxide is a colorless,odorless gas that is present in the atmosphere and is formed when any fuel containing carbon is burned

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8
Q

What is Solar eclipse?

A

Occurs when the Moon passes between the sun and Earth casting the moon’s shadow on Earth

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9
Q

True or False

The solar system has 9 planets and starting from the closest to the sun it goes: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto.

A

False! - There are 8 planets in our solar systems as of August 2006 Pluto was downgraded to a dwarf planet and no longer part of the solar system.

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10
Q

True or False

The Earth has 67 moons

A

False! It has only one moon.

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11
Q

True or False

Earth travels non-stop around the sun. One full orbit takes a year and gives us our seasons.

A

True!

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12
Q

True or False

Mercury is hottest planet in the solar system.

A

False! - Venus is the hottest planet due to it’s dense atmosphere which traps more heat.

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13
Q

True or False

Neptune is the coldest planet.

A

True!

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14
Q

True or False

When asteroids fall on earth they are known as meteoroids

A

False Meteorites

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15
Q

True or False

Around the earth is a layer of gas which is called the sphere.

A

False! It is called the atmosphere

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16
Q

True or False

Human species appeared 100,000 years ago.

A

False! 200, 000 years ago

17
Q

True or False

Scientists think there may be over 7.5 millions of species not discovered yet.

A

True!

18
Q

True or False

What makes earth so special is that it’s the only planet in the solar system that carries life.

A

True!