Planetary Orbits Gravity

According to Kepler's laws, the paths of the planets are

• parabolas

• ellipses

• earth centered

• circle

Tags

NGSS.HS-ESS1-4

If the mass of a planet near the Sun were doubled, the force of attraction would

• remain constant

• be squared

• be one half as strong

• be doubled

Tags

NGSS.HS-PS2-4

In Newton's equation for the law of universal gravitation, F = Gm₁m₂/r², r is

• the distance between the centers of the masses

• a universal constant

• the distance between a planet and the Sun

• the difference in the two masses

Tags

NGSS.HS-PS2-4

According to Kepler's laws, an imaginary line from the Sun to a planet

• remains a constant length through the entire orbit of that planet

• sweeps out larger areas the greater the planet's distance from the Sun than it would in the same time interval when closest to the Sun

• sweeps out larger areas when the planet is closest to the Sun than it would in the same time interval when farthest from the Sun

• sweeps out equal areas in equal time periods

Tags

NGSS.HS-ESS1-4

1.    Kepler’s first law states that the Sun is located at one ____ of a planet’s orbit.

• outside

• focus

• Center

• ellipse

Tags

NGSS.HS-ESS1-4

Newton found that the gravitational force between two masses is inversely proportional to the square of ____.

• the distance between them

• the sum of the masses

• the product of the masses

• the strength of the gravitational field

Tags

NGSS.HS-PS2-4

An increase in the strength of the gravitational field surrounding an object result from an increase in that object’s ____.

• orbit

• mass

• density

• radius

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Planets move faster when they are closer to the Sun and slower when they are farther away

• true

• false

Tags

NGSS.HS-ESS1-4

Kepler’s first law states that the planets move in circular orbits, with the Sun at the center

• true

• false

Tags

NGSS.HS-ESS1-4

Kepler’s third law states that the square of the ratio of the periods of any two planets is equal to the cube of the ratio of their distances from each other

• true

• false

Tags

NGSS.HS-ESS1-4