Our Solar System

The solar system consists of:

• planets, moons, the Sun, dwarf planets, comets and asteroids

• only planets and the Sun

• just the Sun, planets and their moons

• stars and galaxies

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Fill in the blank: The Sun is the ____________ of our solar system and ________________ to our existence.

• center; essential

• edge; harmful

• center; harmful

• biggest planet; essential

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How does our Sun compare to other stars?

• The Sun is the smallest and coolest star known.

• The Sun is the largest and hottest star in the universe.

• The Sun is an average-sized, medium-temperature star.

• The Sun is a red giant star.

How does our Sun compare to other planets?

• The Sun is a star, while planets are not.

• The Sun is smaller than most planets.

• The Sun orbits around the planets.

• The Sun is made mostly of rock like the planets.

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The sun is important for which of the following three things?

• Light, heat, and food production

• Rain, snow, and wind

• Electricity, cars, and computers

• Books, pencils, and paper

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Gravity plays a crucial role in the orbits of the planets by:

• Keeping the planets in their orbits around the Sun

• Providing energy for planetary motion

• Causing planets to emit light

• Slowing down the rotation of planets

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What is the shape of an orbit?

• An orbit is usually an ellipse (oval shape).

• An orbit is always a perfect circle.

• An orbit is a straight line.

• An orbit is a square.

If the moon is falling down to the Earth, why does it never hit the Earth?

• Because the moon is moving fast enough sideways to keep missing the Earth

• Because the Earth's gravity is too weak to pull the moon in

• Because the moon is moving away from the Earth

• Because the moon is held up by the sun

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Which comparison of the inner and outer planets is true?

• Inner Planets: Formed from rock and metal, few moons, smaller size. Outer Planets: Formed from gas and ice, many moons, larger size.

• Inner Planets: Formed from gas and ice, many moons, larger size. Outer Planets: Formed from rock and metal, few moons, smaller size.

• Inner Planets: Formed from water and dust, many moons, larger size. Outer Planets: Formed from rock and metal, few moons, smaller size.

• Inner Planets: Formed from gas and ice, few moons, larger size. Outer Planets: Formed from rock and metal, many moons, smaller size.

What are the dwarf planets and how did they get their name?

• Dwarf planets are small celestial bodies that orbit the Sun and they are smaller than the "true" planets.

• Dwarf planets are the largest planets in the Solar System and got their name from their bright appearance.

• Dwarf planets are moons of Jupiter and got their name from ancient mythology.

• Dwarf planets are asteroids that have collided and got their name from their irregular shapes.