Earth's Characteristics and Motions

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Questions and Answers

What is the mass of Earth?

5.5 x 10^24 kg
6.02 x 10^24 kg
5.98 x 10^24 kg (correct)
5.6 x 10^24 kg

Which of the following is not a primary component of Earth's chemical composition?

Hydrogen (correct)
Silicon
Magnesium
Iron

What type of planetary motion is responsible for the changing seasons?

Inclination
Eccentricity
Precession
Revolution (correct)

What term describes the large scale movements of the Earth?

<p>Revolution (D)</p> Signup and view all the answers

Which of the following was an early perspective of Earth's shape?

<p>Flat board (D)</p> Signup and view all the answers

Flashcards

Earth's Mass

Approximately 5.98 x 10^24 kilograms

Earth's Composition

Primarily iron, oxygen, silicon, magnesium, sulfur, nickel, and calcium.

Earth's Large-Scale Movements

The movement of Earth that causes seasonal changes.

Earth's Small-Scale Movements

Small-scale movements of Earth that cause daily changes and other similar effects.

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Earth's Revolution

Earth's orbit around the Sun.

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Study Notes

Earth's Characteristics

Earth's shape was once perceived as a flat board/an oyster.
Mass: 5.98 x 10²⁴ kg.
Primarily composed of iron, oxygen, silicon, magnesium, sulfur, nickel, and calcium.

Planetary Motions

Two types of movements:
- Large-scale movements
- Small-scale movements
These movements cause Earth's position relative to the sun to change.
This change is responsible for the changing seasons (day/night, winter/summer).
These movements are revolution and rotation.

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Description

Explore the fascinating aspects of Earth's shape, composition, and its movements. This quiz covers the basics of how Earth's rotation and revolution affect our seasons and day/night cycle. Perfect for anyone interested in Earth sciences!