Moon Phases

Front

Illuminate Verb

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[ih-loo-mi-neyt]

Back

Illuminate

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To light something up or supply it with light, making it bright and visible to an observer.

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Example: The Sun lights up the Moon, making it visible from Earth, showing how illumination works.

Front

Moon Phase Noun

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[moon fayz]

Back

Moon Phase

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The different shapes the Moon appears to have when viewed from Earth, caused by its changing orbital position.

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Example: The image shows the Moon phases around Earth, illustrating how its appearance changes from new moon to full moon.

Front

Orbit Noun

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[or-bit]

Back

Orbit

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The curved path that a celestial object takes around another object in space due to a force like gravity.

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Example: The image shows Earth's orbit around the Sun, illustrating how the position changes with seasons.

Front

Gravity Noun

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[grav-i-tee]

Back

Gravity

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The universal attractive force between any two objects that have mass, which keeps planets and moons in orbit.

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Example: Arrows show gravitational force pulling Earth and another object together.

Front

Model Noun

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[mod-l]

Back

Model

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A physical, visual, or conceptual representation of a real-world object or process used to explain scientific ideas.

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Example: A model of the solar system shows how planets orbit the sun, helping to explain their positions and movements.

Front

Scale Noun

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[skeyl]

Back

Scale

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The ratio between the sizes and distances in a model and the corresponding sizes and distances in reality.

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Example: A scale bar shows the ratio of kilometers to miles, illustrating how distances on a map relate to real-world distances.

Front

Apparent Motion Noun

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[uh-pair-ent moh-shun]

Back

Apparent Motion

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The movement of an object as it appears to an observer, which may differ from its actual motion.

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Example: Sequential lighting of bulbs creates the illusion of movement, similar to how moon phases appear to change.

Front

Solar System Noun

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[soh-ler sis-tuhm]

Back

Solar System

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A star and the collection of objects, including planets and moons, that are held in orbit by its gravity.

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Example: The image shows Earth's gravity pulling the Moon, explaining how gravity keeps celestial bodies in orbit.