The Sky from Earth Chapter 11 lesson 1

What did Arybhata discover? He thought that stars moved from east to west because Earth moves from west to east.

What 5 things might you see in the night sky on a clear night? Stars The moon Planets Meteors Comets

What is a natural satellite? A body that orbits that is not man made

What is Earth’s natural satellite? The moon

What are the three requirements for a planet? Orbits the sun Rounded by gravity Cleared the area of its orbit

What is a “shooting star”? A meteor

What is the difference between a meteor and a comet? A meteor is an object that is burning up in the earth’s atmosphere A comet is a cold mixture of dust and ice

What is known about a stars’ location in the sky? The stars position is based on the position of the other stars relative position

What are the two ways that scientists use the word “constellation?” A pattern of stars An area of the sky and all the items in that area

How many western constellations are there? 88

What is a star chart? It is a chart that can help you locate a star in the night

What is Polaris? The north star

What is apparent motion of items in the sky based on? The objects in the sky appear to move based on the motion of earth.

What causes the stars and suns apparent movement in the sky? The earth turning west to east

What causes the seasonal changes in the objects in the night sky? Causes by earth’s orbit around the sun

What constellations can you see year round? The constellations close to the north star

What is the zodiac? The area in the sky where the planets orbit the sun

When can you see Mars, Jupiter, and Saturn? When the Earth passes between the planets and the sun they become visible

When can you see Venus and Mercury? In the evening and early morning

What is the brightest planet in the night sky? Venus