Planetary Laws and Gravity

Which astronomer was the first to say that the Earth is shaped like a sphere?

• Aristarchus

• Aristotle

• Copernicus

• Kepler

Which of the following is constant, meaning it does not change based on location?

• mass

• weight

• gravity

• Newtons

Tags

NGSS.MS-PS1-5

Every object attracts every other object. This is...

• Newton's Law of Universal Gravitation

• Kepler's 1st Law of Planetary Motion

• Kepler's 2nd Law of Planetary Motion

• Kepler's 3rd Law of Planetary Motion

Tags

NGSS.MS-PS2-4

Which of the following has the longest orbital period?

• Mercury

• Venus

• Jupiter

• Saturn

An astronomical unit is the distance from the _______ to the _______.

• Earth; moon

• Earth; Sun

• Earth; Jupiter

• Earth; Pluto

Tags

NGSS.MS-ESS1-3

What two factors affects the gravitational pull of an object?

• Weight

• Mass

• Distance

• Eccentricity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is the eccentricity of a perfect circle?

• 1

• 0.5

• 0

• 100

At what point in orbit will a planet speed up?

• aphelion

• perihelion

• epicycle

• eccentricity

Which astronomer discovered sunspots and the sun's rotational period?

• Copernicus

• Newton

• Kepler

• Galileo

What was the missing force in Kepler's 3 Laws of Planetary Motion that Newton later discovered?

• Eccentricity

• Weight

• Mass

• Gravity

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4