P1 Flashcards

1
Q

What are Asteroids?

A

Irregular lumps of rock

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2
Q

What are comets made of?

A

Rock and ice

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3
Q

What is the Milky way?

A

A galaxy of stars which contains our sun

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4
Q

What is the speed of light?

A

300,000 km/s

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5
Q

What is the difference between real brightness and relative brightness?

A

Real brightness is the actual brightness, and relative is proportional to how far away the star is

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6
Q

Why is it better to have telescopes in space?

A

There is a lot less light pollution, clearer image

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7
Q

Which process happens inside the sun?

A

Nuclear fusion (the collision of hydrogen nuclei)

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8
Q

What are chemical elements made in?

A

Stars

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