Astronomy HW

As the earth rotates on its axis, the constellations and stars in them appear to _________.  

• move across the sky
• stand still in the sky
• move around each other
• rotate

Near the poles, the stars appear to rotate in a circle in the sky and never set.

• True
• False

A scientist is searching for areas where new solar systems might form. What feature is the scientist looking for?

• a star similar to the Sun

• a cloud of dust and gas

• an oxygen-rich atmosphere

• a gravitational acceleration of 9.8 m/sec2

Planets orbit the Sun in a shape called a(n)

• circle
• ellipse
• focus
• perihelion

Tags

NGSS.HS-ESS1-4

When a planet orbits the Sun, one of the foci of the elliptical orbit is 

• the axis
• the perihelion
• the center
• the Sun

Tags

NGSS.HS-ESS1-4

What has an eccentricity of zero

• a straight line
• a large ellipse
• a circle
• a small ellipse

Kepler's 2nd Law deals with 

• the shape of the planets' orbits
• the speed/area the planet travels 
• the length of time it takes the planet to orbit the sun

Tags

NGSS.HS-ESS1-4

The "Law of Harmonies" is which of Kepler's Laws?

• 1st
• 2nd
• 3rd
• 4th

Tags

NGSS.HS-ESS1-4

A planet moves __________ when it is farthest from the sun.

• faster
• slower

Tags

NGSS.HS-ESS1-4

The farther away a planet is from the sun, the _______ it takes it to orbit the sun once. 

• longer
• shorter

Tags

NGSS.HS-ESS1-4