HS-ESS1-1 Exam Review

What state is the sun in right now? (Hint: there is more than one right answer)

• Constant flux

• Equilibrium

• Not changing

• total shelf life of 5 billion years

What does equilibrium in a star mean?

• flow of energy from nuclear fusion is countered by the force of gravity of the star

• the star is unbalanced

• The energy and gravity of a star are fluctuating

How does energy from the sun travel to Earth?

• as EMR from the core

• through conduction from the core

• through convection from the core

The sun goes through cycles, some 11 years and some hundreds of years in length.

• False

• True

How are atomic nuclei (atoms) created?

• through fusion in nuclear power plants

• through fission in nuclear power plants

• through fission in the stars

• through fusion in the stars

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Big Bang nucleosynthesis created which elements?

• Helium (He) through Iron (Fe)

• Hydrogen (H) & Helium (He)

• Cobalt (Co) through Uranium (U)

• Elements heavier than Uranium (U)

Tags

NGSS.HS-ESS1-2

Nuclear fusion produces what? (Check all that apply)

• Light

• heat

• matter

• energy

• Electromagnetic Radiation

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NGSS.HS-ESS1-1

Where does nuclear fusion happen?

• In the core of stars

• In the core of the Earth

• In nuclear power plants

• In the core of the moon

Which of the following statements is true about the scale of energy released by nuclear fusion compared to normal chemical reactions?

• Chemical reactions release more energy than nuclear fusion

• Chemical reactions release less energy than nuclear fusion

• The energy released per second by nuclear fusion in the sun is a tremendous amount of energy.

• Compared to nuclear fusion in the sun the energy released/absorbed by exothermic and endothermic reactions is considerably less.

• Nuclear fusion releases less energy than chemical reactions

Stellar nucleosynthesis creates which elements?

• Helium (He) through Iron (Fe)

• Hydrogen (H) & Helium (He)

• Cobalt (Co) through Uranium (U)

• Elements heavier than Uranium (U)

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3