Earth, Sun, and Moon System

Front

Atmosphere Noun

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[at-muh-sfeer]

Back

Atmosphere

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A layer of gases that surrounds a celestial body, such as a planet or a star, held by gravity.

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Example: The image shows Earth's atmosphere layers, each labeled with altitude and temperature, explaining the concept of atmospheric layers.

Front

Core Noun

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[kor]

Back

Core

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The innermost, central region of a celestial body, like a planet or star, which can be solid or liquid.

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Example: The image shows Earth's layers, highlighting the inner and outer core, helping students understand the core's position and size.

Front

Gravity Noun

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[grav-i-tee]

Back

Gravity

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A natural force of attraction that exists between all objects that have mass, pulling them toward one another.

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Example: The image shows gravity as a force pulling objects toward each other, like Earth and a smaller object.

Front

Mass Noun

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[mas]

Back

Mass

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The measure of the amount of matter, or physical substance, that makes up an object in space.

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Example: A balance scale with a feather and a rock shows how mass is the amount of matter in an object.

Front

Orbit Noun

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[or-bit]

Back

Orbit

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The curved, repeating path that one object in space takes as it revolves around another due to gravitational pull.

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Example: The image shows Earth's orbit around the Sun, illustrating the curved path and distances at different points.

Front

Star Noun

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[star]

Back

Star

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A massive, luminous sphere of hot gas that produces its own light and energy through nuclear fusion in its core.

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Example: The Sun, a star, emits energy and light, showing its role in the Earth, Sun, and Moon system.

Front

Solar System Noun

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[soh-ler sis-tuhm]

Back

Solar System

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The collection of a star and all the celestial bodies, like planets and asteroids, that are gravitationally bound to it.

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Example: The image shows the Solar System with labeled planets and the Sun, illustrating their arrangement.

Front

Sunspots Noun

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[suhn-spots]

Back

Sunspots

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Temporary, dark, and cooler areas on the Sun's surface caused by intense magnetic activity that inhibits heat transfer.

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Example: Sunspots are cooler, dark areas on the Sun's surface caused by magnetic activity, shown here with field lines.

Front

Solar Flares Noun

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[soh-ler flairs]

Back

Solar Flares

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A sudden, intense eruption of energy and radiation from the Sun's surface, often appearing as a bright flash.

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Example: A solar flare is shown as a bright flash on the Sun, illustrating a sudden energy eruption.

Front

Rocky Planet Noun

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[rok-ee plan-it]

Back

Rocky Planet

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A type of planet, also known as a terrestrial planet, composed primarily of silicate rocks or metals with a solid surface.

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Example: The image shows Mars as a rocky planet with a solid surface and layers, illustrating its composition of silicate rocks and metals.