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TEST QUESTION 2.1. If the mid-night Sun (the Sun is above the horizon at mid night) can be seen at Los Angeles (latitude 34 o N) only on summer solstice, June 21 st , we would deduce the Earth’s spin and orbit are: xA : parallel xB : tilted by 34 o vC : tilted by 56 o

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test question 2 1
TEST QUESTION 2.1
  • If the mid-night Sun (the Sun is above the horizon at mid night) can be seen at Los Angeles (latitude 34o N) only on summer solstice, June 21st , we would deduce the Earth’s spin and orbit are:
    • xA: parallel
    • xB: tilted by 34o
    • vC: tilted by 56o
    • xD: perpendicular to each other
test question 2 2
TEST QUESTION 2.2
  • Full moon
    • vA: rises in the East during Sunset
    • xB: rises at midnight
    • xC: can be seen throughout the day
    • xD: sets in the West around 8pm
test question 2 3
TEST QUESTION 2.3
  • On July 20, 1969, Neil Armstrong landed on the moon and saw the Earth directly overhead. Two weeks later at the same location on the moon, he would see the Earth
    • xA: below the horizon
    • xB: near the eastern horizon
    • vC: at the same place overhead
    • xD: near the polaris star
test question 2 4
Test question 2.4
  • At noon on the first day of the summer (June 21st), the Sun is overhead in Syene but it casts a

7o shadow in Alexandria. If the Earth is like a ball, this observation can be used to measure

xA: the size of the Sun

xB: the distance of the Sun

vC: the size of the Earth

xD: the tilt of the Earth’s spin axis

test question 2 5
Test question 2.5
  • In the year of the horse, the Sun is overhead in Syene at noon on June 21st and it also casts a 7o shadow

800 km north of Syene. On the same day in the following year (the year of the rabbit), the Sun is still overhead in Syene but it casts a 3.5o shadow 800 km north of Syene.

This observation indicates that

vA: the Earth has doubled its size

xB: the Earth has halved its size

xC: the Earth remains the same size

xD: the Sun halved its distance from the Earth

test question 2 6
Test Question 2.6
  • Heliocentric theory was originally proposed

xA: by Copernicus during the renaissance

xB: by Ptolemy in 2 century BC to describe

the retrograde motion of the planets

vC: by Aristarchus in 4 century BC, but it

was disfavored by the lack of parallax.

xD: by Hipparcus in 2 century BC to account

for the seasons

test question 2 7
Test question 2.7
  • Sidereal period of planets refers to the time it takes for them to complete one orbit around the Sun as seen from a fixed location

xA: on the Sun,

xB: on the Earth

vC: in space outside the solar system

xD: on that planet