The Science of Size --- Twig Galactic Guidebook

What is the biggest object in the Solar System?

• The Moon

• The Earth

• Jupiter

• The Sun

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What did scientists believe in the sixteenth century?

• The Sun was at the center of the Universe

• The Earth was flat

• The Earth was at the center of the Universe

• Mars was the biggest planet

What is the shape of the Earth?

• Sphere

• Square

• Flat

• Triangle

What keeps you from falling off the Earth?

• Magic

• Invisible walls

• Strong winds

• Gravity

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What did people believe until the fourth century BCE?

• The Sun revolved around the Earth

• The Earth was a cube

• The Earth was the smallest object in the Universe

• The Earth was flat

What is the Sun compared to other stars in the Universe?

• The only star

• Average size

• The smallest

• The largest

What are constellations?

• Planets

• Comets

• Groups of stars

• Galaxies

Why does it take so much rocket fuel to launch astronauts into space?

• Because rockets are heavy

• Because space is cold

• Because the Earth is flat

• Because of gravity

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What is necessary to be sure an idea is true?

• Reading about it

• Dreaming about it

• Testing the idea

• Believing in it

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What did people use to classify stars into constellations?

• Imagination

• Telescopes

• Patterns in the sky

• Books