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Astronomy

21 Terms

1

Big Bang

________- The event that may have triggered the expansion of the universe 14 billion years ago.

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2

Blue green colour

What is from the methane gas (CH4) in its atmosphere? Answer with a single words or term.

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3

Milky Way

________- The galaxy that includes the solar system; appears as a hazy white band in the night sky.

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4

Constellation

________- A group of stars that seem to form a distinctive pattern in the sky.

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5

Nuclear Fusion

________- The process of energy production in which hydrogen nuclei combine to form helium nuclei.

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6

Rotation

________- The turning of an object around an imaginary axis running through it.

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7

Redshift

________- The effect in which objects moving away from an observer have their wavelengths lengthened, toward the red end of the.

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8

Ellipse

________- A curve that is generally referred to as an oval or the shape of an egg.

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9

Supercluster

________- A gigantic cluster of 4 to 25 clusters of galaxies, which is hundreds of millions of light- years in size.

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10

Blueshift

________- The effect in which objects moving toward an observer have their wavelengths shortened, toward the blue end of the.

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11

Supernova

________- A massive explosion in which the entire outer portion of a star is blown off.

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12

● Evidence

________ supporting the solar nebula theory consists of heavily cratered objects, most planets rotating in about the.

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13

Latitude

________- The location above or below the equator.

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14

Rocky ball

________ covered in craters.

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15

Sunspot

________- An area of strong magnetic fields on the photosphere.

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16

● Sunspots

________ can produce solar flares, which send gigantic beams of charged particles into space.

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17

Apparent Magnitude

________- The brightness of a star as seen from Earth.

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18

Hertzsprung Russell

________- Diagram a graph that compares the properties of stars.

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19

Satellite

________- A human- made object or vehicle that orbits Earth, the Moon, or other celestial bodies; also, a celestial body that orbits.

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20

Water

________ covers ¾ of Earths surface, only place with ________ in 3 phases (Liquid, solid, gas)

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21

Main Sequence

________- A narrow band of stars on the H- R diagram that runs diagonally from the upper left (bright, hot stars) to the lower.

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