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memorize.ai (lvl 286)

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Section 1

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elliptical

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Science

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Last updated

4 years ago

Date created

Mar 14, 2020

Cards (25)

Section 1

(25 cards)

elliptical

Front

oval-shaped

Back

inner planets

Front

Mercury, Venus, Earth, and Mars

Back

terrestrial planet

Front

The name given to the four inner planets: Mercury, Venus, Earth, and Mars.

Back

axis

Front

An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates

Back

radiate

Front

To send out rays; to beam or shine

Back

absolute magnitude

Front

how bright a star actually is

Back

light year

Front

the distance light can travel in one year

Back

greenhouse effect

Front

Process by which atmospheric gases trap heat close to Earth's surface and prevent it from escaping into space

Back

milky way

Front

A large spiral galaxy that is home to Earth and the rest of our solar system, and about a trillion stars.

Back

astroid

Front

A small rocky object that orbits the sun

Back

comet

Front

A ball of frozen dust and rock that orbits the sun and has a tail that glows

Back

observable universe

Front

the furthest we can see out into the universe

Back

revolution

Front

Earth's yearlong elliptical orbit around the sun

Back

astronomical unit

Front

A unit of length used for distances within the solar system

Back

outer planets

Front

Jupiter, Saturn, Uranus, and Neptune

Back

rotation

Front

The spinning of Earth on its axis

Back

cosmic address

Front

where you are in the universe

Back

apparent magnitude

Front

the brightness of a star as seen from Earth

Back

scale

Front

Gives the ratio of the dimension in the drawing to the dimensions of the object

Back

magnitude scale

Front

The astronomical brightness scale; the larger the number, the fainter the star.

Back

reflect

Front

The bouncing of light off a surface

Back

parallax

Front

apparent change in position of an object when you look at it from different places

Back

Hipparchus

Front

The first man to classify stars according to their brightness

Back

astronomer

Front

A scientist who studies the stars and other objects in the sky

Back

luminosity

Front

the true brightness of an object the amount of energy a body radiates per unit of time

Back