chap 3&4 Question and answers rated
A+
The core of the Sun can reach temperatures as high as - correct answer
✔15 million degrees kelvin
Which layer of the Sun is its visible surface? - correct answer
✔Chromosphere
How long does it take the energy from the Sun's surface to reach Earth? -
correct answer ✔8 minutes
The amount of radiation received at the top of the Earth's atmosphere from
the Sun is called the - correct answer ✔Total solar irradiance (TSI)
The (TSI) was first measured directly by satellite in 1978 as - correct answer
✔1370 watts per square meter
Which is the best description of a sunspot? - correct answer ✔Large, slightly
depressed areas in the photosphere that are around 1500 K cooler than the
surrounding Sun
Sunspot intensity follows an - correct answer ✔11 year solar cycle
Each new solar cycle is marked by a reversal in - correct answer ✔North-
south polarity of the Sun's magnetic field
The transition between sunspot cycles 23 and 24 saw an unusually - correct
answer ✔Prolonged period of lowered TSI
, Which of the following is the orbital cycle that describes the way Earth's axis
wobbles over time? - correct answer ✔Precession
Which of the following is the orbital cycle of Earth that determines the passage
of seasons? - correct answer ✔Obliquity
The tilt of the Earth's orbital axis cycles back and forth between 22.1 degrees
and 24.5 degrees with a period of around - correct answer ✔41 000 years
What are the values between which the eccentricity of Earth's orbit varies? -
correct answer ✔0.005 and 0.06
What is the current approximate value of the eccentricity of Earth's orbit? -
correct answer ✔0.017
What is Earth's perihelion? - correct answer ✔The point in Earth's orbit
where it is closest to the Sun
In general, what does the data say about the effect of Earth's orbital cycles on
climate? - correct answer ✔They have a cooling effect
Which is an accurate description of the composition of Earth's atmosphere? -
correct answer ✔78% nitrogen, 20% oxygen, 1% argon, <1% other
Which list of Earth's atmospheric layers is correctly ordered from lowest to
highest latitude? - correct answer ✔Troposphere, stratosphere, mesosphere,
thermosphere
A+
The core of the Sun can reach temperatures as high as - correct answer
✔15 million degrees kelvin
Which layer of the Sun is its visible surface? - correct answer
✔Chromosphere
How long does it take the energy from the Sun's surface to reach Earth? -
correct answer ✔8 minutes
The amount of radiation received at the top of the Earth's atmosphere from
the Sun is called the - correct answer ✔Total solar irradiance (TSI)
The (TSI) was first measured directly by satellite in 1978 as - correct answer
✔1370 watts per square meter
Which is the best description of a sunspot? - correct answer ✔Large, slightly
depressed areas in the photosphere that are around 1500 K cooler than the
surrounding Sun
Sunspot intensity follows an - correct answer ✔11 year solar cycle
Each new solar cycle is marked by a reversal in - correct answer ✔North-
south polarity of the Sun's magnetic field
The transition between sunspot cycles 23 and 24 saw an unusually - correct
answer ✔Prolonged period of lowered TSI
, Which of the following is the orbital cycle that describes the way Earth's axis
wobbles over time? - correct answer ✔Precession
Which of the following is the orbital cycle of Earth that determines the passage
of seasons? - correct answer ✔Obliquity
The tilt of the Earth's orbital axis cycles back and forth between 22.1 degrees
and 24.5 degrees with a period of around - correct answer ✔41 000 years
What are the values between which the eccentricity of Earth's orbit varies? -
correct answer ✔0.005 and 0.06
What is the current approximate value of the eccentricity of Earth's orbit? -
correct answer ✔0.017
What is Earth's perihelion? - correct answer ✔The point in Earth's orbit
where it is closest to the Sun
In general, what does the data say about the effect of Earth's orbital cycles on
climate? - correct answer ✔They have a cooling effect
Which is an accurate description of the composition of Earth's atmosphere? -
correct answer ✔78% nitrogen, 20% oxygen, 1% argon, <1% other
Which list of Earth's atmospheric layers is correctly ordered from lowest to
highest latitude? - correct answer ✔Troposphere, stratosphere, mesosphere,
thermosphere
