Models of the Solar System

What was the main belief of the geocentric model?

• Earth is at the center of the solar system.

• The Sun is at the center of the solar system.

• Planets move in elliptical orbits.

• Stars are stationary.

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Remembering

Who introduced the heliocentric model in the 1500s?

• Galileo Galilei

• Nicolaus Copernicus

• Tycho Brahe

• Johannes Kepler

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Which describes the main difference between the geocentric and heliocentric models of the solar system?

• Both models place the Earth at the center of the solar system.
• The geocentric model is based on the Sun's position, while the heliocentric model is based on the stars.
• The heliocentric model suggests that planets orbit around each other rather than the Sun.
• The geocentric model centers on the Earth, while the heliocentric model centers on the Sun.

Which diagram represents a geocentric model?

[Key: E = Earth, P = Planet, S = Sun]

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Which kind of model of the solar system is represented by the diagram?

• Heliocentric model
• Flat Earth model
• Geocentric model
• Binary star system model

What did Galileo initially think the bright points of light near Jupiter were?

• Mini planets orbiting Jupiter

• stars

• Moons of Jupiter

• Comets

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Understanding

Fill in the blank: Johannes Kepler discovered that planets move in ___ orbits.

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Applying

Which astronomer made precise observations that helped Kepler develop better models of planetary motion?

• Nicolaus Copernicus

• Galileo Galilei

• Tycho Brahe

• Isaac Newton

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What was the significance of Galileo's discovery of Jupiter's moons?

• It proved the geocentric model.

• It supported the heliocentric model.

• It showed planets move in perfect circles.

• It disproved Kepler's laws.

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Applying

Fill in the blank: The geocentric model was also known as the ___ System.

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