2019 p2

Question 1

hottest to coldest of sun’s features

Answer 1

corona, chromosphere, photosphere, sunspot

Question 2

Compare advantages and disadvantages of using lander over orbiter

Answer 2

adv:
-can take samples of surface
-and test presence of life
-higher resolution images

disadv:
could contaminate environment
-more difficult to land softly on surface
-more expensivento land softly on surface

Question 3

why does it require more energy to send a probe far from earth than into earth’s orbit

Answer 3

because it must overcome earth’s escape velocity

Question 4

explain why europa is soherical but phoebe has an irregular shape

Answer 4

-europa has large gravity
-greater than elastic forces (preventing planetary collapse

-phoebe is so small
-cools too quickly to form sphere

Question 5

define binary star system

Answer 5

2 stars which are gravitationally bound to eachother

Question 6

differences between observing w telescope and w naked eye (binary stars)

Answer 6

-cannot be resolved (only see one star)
-fainter

Question 7

as wavelength increases what happens to resolution

Answer 7

it decreases

Question 8

Desdribe observational evidence that MILKY WAY galaxy is classified as spiral rather than elliptical

Answer 8

-elliptical galaxies stars more uniformly distributed
-our galaxy would not appear as a band across the sky

OR

-more stars observed un a band across sky
-indicating a flat spiral shape