Test Gravity and Planetary Motion

The planets in our solar system all have ______ orbits.

• Elliptical

• Circular

• Highly eccentric

Tags

NGSS.MS-ESS1-2

An orbit with the eccentricity of 0.9 would have more of a(n) ______ shaped orbit.

• Circular

• Elongated

• Spiral

The value of eccentricity can range from ______ to ______.

• 0.1; 0.9

• -1; 0

• 0; 100

• 0; 1

Our solar system can best be described by the ______ model.

• Heliocentric

• Geocentric

• Ellipticalcentric

Which shape has the eccentricity of zero and a single focus?

• Spiral

• Oval

• Circle

What effect does increasing the distance between an ellipse’s foci have on the shape of an ellipse?

• Increases eccentricity

• Decreases eccentricity

• No effect

Which statement best describes Kepler’s 2nd Law of Planetary Motion?

• Planets revolve around the sun over equal areas in equal time intervals

• Planetary orbits are in the shape of an ellipse

• A planet’s orbital period is proportionate to its distance from the sun

Tags

NGSS.HS-ESS1-4

Where will an object move at the greatest speed as it orbits the sun?

• Perihelion

• Aphelion

• Between perihelion and aphelion

Earth is at aphelion in the month of ______________ and perihelion in the month of ______________.

• January; July

• March; September

• November; July

• July; January

Tags

TX.SCI.7.9.B

According to Figure 1, which location is the Sun?

• 1

• 2

• 3

Tags

NGSS.MS-ESS1-1