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Exploring Earth: Our Home Planet

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Questions and Answers

What percentage of the Earth's surface is 'earth' or 'land'?

51%
29% (correct)
41%
71%

How long will a day on Earth be in a few million years?

23hrs
25hrs
27hrs (correct)
30hrs

What is the temperature difference between the Earth's core and the surface of the sun?

5,000 C hotter than the sun
10,000 C hotter than the sun
7,500 C hotter than the sun (correct)
2,000 C hotter than the sun

What is unique about Earth's name?

It is the only planet not named after a mythical god (C) Signup and view all the answers

Where are 75% of the world's active and dormant volcanoes found?

Along the Pacific Ring of Fire (A) Signup and view all the answers

Approximately how many volcanoes are actively erupting on any given day?

10-20 (D) Signup and view all the answers

What is the primary composition of the Earth's atmosphere?

Nitrogen 77%, Oxygen 21% (C) Signup and view all the answers

What is the highest recorded temperature on Earth?

136 o F or 57.8 o C in El Azizia, Libya (A) Signup and view all the answers

What is the average distance between the Earth and the Moon?

384,400 km (B) Signup and view all the answers

What is the lowest recorded temperature on Earth?

-128.5 o F or -89.17 o C in Vostok, Antarctica (C) Signup and view all the answers