Unit 1 Environmental Science

Define nuclear fusion.

• Nuclear fusion – combining lighter atoms to make heavier ones – is what makes it possible.

• Nuclear fusion – splitting lighter atoms to make heavier ones – is what makes it possible.

• Nuclear fusion – combining heavier atoms to make lighter ones – is what makes it possible.

• Nuclear fusion – splitting heavier atoms to make lighter ones – is what makes it possible.

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NGSS.HS-PS1-8

When hydrogen is "fused" together on the Sun, what new element is created?

• Helium

• Carbon Dioxide

• Oxygen

• Light

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When is a star born?

• when the nebula starts spinning
• nuclear fusion starts
• when gas and dust starts to contract
• when x rays get emitted

An explosion that occurs at the end of a massive star’s life is a              

• black hole
• supernova
• white dwarf
• nebula

small, negatively charged subatomic particles that flay around the nucleus are called 

• protons
• neutrons
• electrons
• dust

particles that are located in the nucleus of an atom and no charge

• proton
• neutron
• electron
• dust

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NGSS.HS-PS1-8

a dense positively charged sub atomic particle is called a 

• proton
• neutron
• electron
• plasma

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NGSS.HS-PS1-8

The process of fusion happens in a star's

• Corona

• Convection Zone

• Radiative Zone

• Core

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The process of fusion requires

• High heat and high pressure

• Cool temperatures and no gravity

• A snack

• High heat and low pressure

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What state of matter are stars made up of?

• solid

• liquid

• gas

• plasma