Sun, Planets and Our Solar System

How do scientists believe gravity influenced the formation of the planets in our solar system?

• A large cloud of gas and dust ignited into a planet.

• Gravity pulled the planets out of the Sun.

• A large explosion created the planets.

• Large pieces of debris clumped together to form planets.

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NGSS.MS-ESS1-2

What are the steps of the Nebular Theory?

• Step 1: A tiny point rapidly expanded

  Step 2: Helium was compressed into stars

  Step 3: The stars explode and turn into planets

• Step 1: Gravity pulled together atoms in a nebula

  Step 2: Nuclear fusion occurred and a star is born

  Step 3: Smaller clumps around the star formed into planets

• Step 1: The solar system formed because of the Big Bang

  Step 2: Our solar system was the first one

  Step 3: Dark energy is pushing other solar systems away

• Step 1: Gaseous planets will orbit the Sun slower

  Step 2: Rocky planets will orbit the Sun faster

  Step 3: The Sun will vaporize all the inner planets

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NGSS.MS-ESS1-2

What causes the tides?

• The Moon and the Sun's gravity

• The Earth and the Sun's gravity

• Jupiter and Saturn's gravity

• The inner planets gravity

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What does the Earth, Moon and Saturn have in common?

• The Sun revolves around them.

• Saturn orbits the Earth, and at the same time, the Moon revolves around the Earth.

• They all revolve in elliptical orbital paths around the Sun due to gravity.

• They all have life on them.

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NGSS.MS-ESS1-2

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Gravity is affected by

• mass and distance

• shape and color

• volume and density

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The pull of gravity decreases when the distance between two objects

• Increases

• Decreases

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NGSS.HS-PS2-4

Which to things affect the strength of gravitational pull?

• Distance and Weight

• Heat and Density

• Mass and Distance

• Gas and Dust

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NGSS.MS-PS2-4

What causes the planets to have a slightly elliptical orbit?

• Moon’s gravity

• Sun’s gravity

• Planet’s inertia

• BOTH Sun’s gravity and Planet’s inertia

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What is planet #7?

• Mercury

• Venus

• Uranus

• Neptune

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What is planet #2?

• Mercury

• Venus

• Mars

• Neptune

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NGSS.MS-ESS1-3