Grade 4 Space studying flashcards

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International Standard Calendar

Back

The international standard (Gregorian) calendar is based on the amount of time it takes Earth to revolve around the Sun.

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Lunar Calendar

Back

Lunar calendars follow patterns of the Moon for timekeeping.

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Moon

Back

A moon is a natural object that orbits a planet.

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Planetarium

Back

A planetarium is a domed theatre that projects images and videos of objects in space.

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Rotate

Back

Rotate refers to when an object revolves around its axis. For example, Earth rotates around its north-south axis.

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Telescope

Back

A telescope is an optical device used to make far away objects appear closer.

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Universe

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The universe includes all of space and everything in it.

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Definition of the Universe

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The universe is everything we can touch, feel, sense, measure, and detect.

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Galaxy

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A galaxy is a massive collection of gas, dust, and billions of stars and their solar systems.

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Viewing Objects in Space

Back

Binoculars, telescopes, and planetariums are used to observe objects in space.