Unit 7 Astronomy

Which of the following is NOT a region of the Sun?

• Deuterium nucleus

• The core

• The convective zone

• The visible surface

Choose the answer choice that BEST completes the following sentence:

The ________________ of the Sun is the interior or center part of this star.

• Radiative Zone

• Core

• Convective Zone

• Photosphere

The Sun creates energy through a series of steps known as:

• Electron-neutron chain reaction

• Nuclear fission

• Proton-electron chain reaction

• Proton-proton chain reaction

Tags

NGSS.HS-ESS1-1

Choose the answer choice that BEST completes the following sentence.

About four million tons of __________________ are converted to energy in the Sun’s core every second.

• Oxygen

• Matter

• Atmosphere

• Iron

Tags

NGSS.HS-ESS1-1

Given that the Sun is estimated to be about five billion years old, scientists estimate that we are about halfway through its lifetime. This means that the Sun’s lifetime is expected to be what length of time?

• 10 billion years

• 5 billion years

• 20 billion years

• 4.5 billion years

In comparing sunspots to the other areas of the Sun’s surface, one can say that sunspots are:

• Slower in reacting to creating energy

• Similar in temperature

• Cooler

• Warmer

Trapped gas within the Sun is known as:

• Sunspots

• Filaments

• Coronal mass

• None of these is correct

Choose the word that BEST completes the following sentence.

The sunspot cycle is a pattern of solar activity where the average number of sunspots gradually _______________________________ and _______________________________.

• Stops, re-starts

• Increases, bursts

• Fades, dies out

• Increases, decreases

Which of the following is NOT an effect of a solar flare?

• Magnetic storms

• Eruptions of charged particles

• The energy created inside the Sun becomes non-existent

• Eruptions of X-rays

Tags

NGSS.HS-PS4-3

Solar flares emit energy in three different stages. The precursor stage includes which of the following?

• The decline of soft X-rays

• The release of magnetic energy

• The acceleration of protons and neutrons

• The build up of soft X-rays