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From RegentsEarth.com
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win
Ques. #1
The process that powers the sun
(and all stars) is........
(Nuclear) fusion
Back
Ans.
Ques. #2
Luminosity is the brightness of a
star independent of it’s.................
Distance
Ans.
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Ques. #3
What is a nebula?
A cloud of gas & dust in space
Ans.
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Ques. #4
According to the Doppler effect, what
happens to the wavelengths of light
emitted by an object approaching the
Earth?
The wavelengths decrease (are shifted towards the
blue end of the specturm.
Ans.
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Ques. #5
If it takes the Earth
the same amount of
time to move from
location A to B as it
does to move from
C to D, what do you
know about the
shaded areas 1 & 2
Areas 1 & 2 are equal
Ans.
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Ques. #6
What is the maximum possible
eccentricity of an ellipse and what
name is given to an ellipse with that
eccentricity?
Maximum e is 1. An ellipse whose e =1 is a line.
Ans.
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Ques. #7
What star is about the same
temperature as our sun but is
more than 100 times more luminous
Polaris
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Ques. #8
3 part question: If an object is moving away
from the earth tell what will happen to each of
the following:
a) The wavelengths of light emitted
b) The gravitational attraction
c) The apparent diameter
a) longer (red shifted)
b) weaker (decreased)
c) smaller
Ans.
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Ques. #9
State the relationship between a
planet’s distance from the sun and
it’s orbital velocity.
As distance increases, orbital velocity decreases
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Ques. #10
Distance CD is
48. Distance
AB is 12.
What is e?
e = 0.25
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Ques. #11
What term describes
the system shown in
the diagram?
Geocentric
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Ques. #12
At what rate does the Earth rotate?
15°/hr
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Ques. #13
What is the name of our galaxy?
The Milky Way
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Ques. #14
Name any evidence that supports
the Big Bang theory.
1) Background radiation
2) Expanding universe as evidenced by red shift
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Ques. #15
What event
is shown in
the diagram?
A solar eclipse
Ans.
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Ques. #16
On which planet is a day (1 rotation)
longer than a year (1 revolution)?
Venus
Ans.
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Ques. #17
What event is
shown in the
diagram?
A lunar eclipse
Ans.
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Ques. #18
The solid lines are star
trails which record the
nightly paths of stars
around Polaris. How many
hours are represented
by these trails?
4 hours
Ans.
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Ques. #19
What is the
time at
location B?
8 AM
Ans.
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Ques. #20
What is the
phase when the
moon is at
position 1?
New moon
Ans.
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Ques. #21
How far is it from Saturn to
Neptune?
3069 km
Ans.
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Ques. #22
How long does it take the moon
to complete one set of phases
(from new moon to new moon)?
29.5 days
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Ques. #23
What kind of
tides are
produced by this
arrangement of
the sun, moon
and earth?
Neap tides
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Ques. #24
What term
describes this
cloud of gas
and dust in
space?
Nebula
Ans.
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Ques. #25
About how old is Jupiter?
About 4.6 billion years old
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Ques. #26
Which number
represents the
only possible
position of the
moon during a
lunar eclipse?
Position 5
Ans.
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Ques. #27
Approximately how much time
goes by between high and low
tides at any location on Earth?
Just over 6 hours
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Ques. #28
What name is given to
electromagnetic energy with a
wavelength of 0.005cm?
Infra red
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Ques. #29
Explain why you see different
constellations (stars) in the winter
than you do in the summer.
The earth moves 186 million miles (around the sun)
from it’s summer to it’s winter position so that we
are looking at very different parts of the sky.
Ans.
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Ques. #30
Why does the apparent diameter
of the sun (as seen from earth)
change throughout the year?
The earth’s orbit is an ellipse. Sometimes we’re
closer so the sun appears larger. Sometimes we’re
farther away so the sun appears smaller.
Ans.
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YOU’RE A
WINNER!
The orbit of the Earth is a
slightly eccentric ellipse