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According to Kepler's first law, where is the orbited object located in relation to the elliptical path?

• At the center of the ellipse
• At the focus
• At the perihelion
• At the aphelion

Tags

NGSS.HS-ESS1-4

What is the term for the degree to which an orbit's elliptical shape is flattened?

• Perihelion
• Focus
• Eccentricity
• Orbital precession

Which celestial bodies typically have highly eccentric orbits?

• Planets in our solar system
• Earth's moon
• Stars
• Comets and asteroids

Tags

NGSS.HS-ESS1-4

When does a planet move fastest in its orbit?

• At aphelion
• At equal intervals
• When farthest from the sun
• d. When closest to the sun

Tags

NGSS.HS-ESS1-4

Earth reaches its perihelion (closest approach to the sun) around what date?

• July 4
• January 4
• March 21
• December 21

What causes long-term periodic changes to Earth's orbital parameters?

• Gravitational forces from other planets
• Solar flares
• Earth's rotation
• Atmospheric pressure

Tags

NGSS.HS-PS2-4

Who discovered the cycles of Earth's orbital parameters in the 1920s?

• Johannes Kepler
• Isaac Newton
• Milutin Milanković
• Galileo Galilei

What unit is typically used to measure distances to planets?

• Light years
• Kilometers
• Parsecs
• Astronomical units (AU)

How far is one AU in kilometers?

• 299,792,458
• 249,600,000
• 149,600,000
• 384,400

Which planet has the largest mass in our solar system?

• Saturn
• Mars
• Neptune
• Jupiter