Physical Science Flashcards

1
Q

Irregular

A

No particular shape

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2
Q

Elliptical

A

Little gas or dust and round in shape

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3
Q

Spiral

A

Made of gas, dust and stars

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4
Q

Fission

A

Separation of elements to form two different elements

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5
Q

Fusion

A

Combining elements to form another element

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6
Q

Where do stars get their energy from?

A

Nuclear Fusion

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7
Q

Light year

A

Distance that light travels in one year

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8
Q

How are stats formed?

A

Clouds of dust,gas, and nubulas.

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9
Q

How many stars can the naked eye see?

A

6,000

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10
Q

Sun

A

Has a balance of inward and out ward forces

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11
Q

White dwarf

A

When the sun is late in its life cycle and starts to become a dead star or a white dwarf.

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12
Q

When does a star begin to die?

A

After about 25% conversion of hydrogen to helium

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13
Q

Why do stars appear different than other stars?

A

There at different stages in there life cycles

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14
Q

When does nuclear fusion occur?

A

Converting hydrogen to helium

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15
Q

Black holes

A

Compressed super nova that have very large mass with very little radius.

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16
Q

Super nova

A

Huge bright explosion resulting in death of a massive star

17
Q

How does energy move through a star?

A

Radiation and convection

18
Q

Radiation

A

Emission of energy as electromagnetic waves

19
Q

Convection

A

Less dense material to rise. Denser material to sink under the influence of gravity.

20
Q

Conduction

A

By which heat or electricity is directly transmitted your touch.