Unit 3 Lesson 3 The Sun Lesson

​page 148

​Read the Blue Title Questions and then the Highlighted Answers​

Multiple Choice

How old is our sun?

• 46 years old

• 4.6 million years old

• 4.6 billion years old

• 460,000 thousdand years odl

Multiple Choice

What element makes up the majority of the sun?

• helium

• hydrogen

• carbon

• nitrogen

Multiple Choice

Which is the layer closest to the core of the sun?

• conductive zone

• radiative zone

• convective zone

Reorder

Reorder the following atmospheric layers of the sun moving from the innermost layer (1) to the outermost layer (3).

• corona

• chromosphere

• photosphere

1

2

3

• 1
• 2
• 3

​watch video below

Multiple Choice

How is energy tranferred to the sun's surface?

• by radiation and convection

• by conduction and convection

• by radiation and conduction

• by conduction

Multiple Choice

Convection cells in the sun’s convective zone carry energy from the top of the radiative zone to the photosphere. In convection cells, hot gases rise to the photosphere, cool, and then sink back into the convective zone. What causes the transfer of energy in this process?

• the absorption and re-emission of electromagnetic waves

• the condesation of hot gas into liquid

• the movement of matter

• the process of nuclear fusion

Multiple Choice

In stars that have similar core temperatures to our sun, the fusion starts with two ____________ atoms.

• hydrogen

• helium

• carbon

• iron

Multiple Choice

The sun rotates ________ at its equator than at the north and south poles of its axis.

• faster

• slower

• the same speed

• backwards

Multiple Choice

Which solar activity appears as a very bright spot?

• sunspot

• solar flare

• prominence

Multiple Choice

Which solar activity appears as a darker, cooler area?

• sunspot

• solar flare

• prominence

Multiple Choice

Which solar activity appears as a loop of gas?

• sunspot

• solar flare

• prominence