Kepler's Laws

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

• faster
• slower

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

The point in a planets orbit where it is FARTHEST away from the sun

• aphelion
• perihelion

The point in a planets orbit where it is CLOSEST to the sun

• aphelion
• perihelion

Kepler's 1st Law says this about the orbits of planets

• they are elliptical.

• they are perfect circles.

• they are always perfect polygons (square, pentagon, hexagon, etc.,)

• they are parabolic.

The path a planet travels around the sun is called its 

• orbit
• ellipse
• barycenter
• precession

Tags

NGSS.MS-ESS1-1

Kepler's 3rd Law states that the farther away a planet is from the sun, the _______ it takes it to orbit the sun once (year).

• longer

• shorter

According to Kepler's 2nd Law when do planets move the fastest?

• Close to the sun
• Far away from the sun

A new planet is discovered orbiting a single star. The planet has one moon. According to Kepler’s first law, what do scientists know about the orbit of the planet around the star?

• The orbit is circular

• The orbit is elliptical

Tags

NGSS.HS-ESS1-4

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