What telescope initiated by George Ellery Hale was used by Edwin Hubble in
1923 to establish that spiral nebulae were other galaxies?
The 100-inch Hooker Reflector
What is the major advantage of connecting signals from different radio
What is convection? The upward flow of warm material and downward flow of
What happens at a subduction zone? An oceanic plate slides beneath a
Along which type of plate boundary has the Alps mountain range of sou
The speed of light is not infinite. What does that mean to us?
Speed of light: 186,000 miles/seconds
Or 300,000,000 meter/sec
Looking back into history- you do it.
Science- What is it?
Many persons in fact do not understand the difference between, say, Ph
What is the 2nd most massive body in the solar system?
What property of planets can obtained from the study of the orbits of moons and
law of gravity?
Which planets are Jovian planets?
Jupiter, Saturn, Neptune, and Uranus
What is the approximate range of wavelengths for the visible part of the
Of the following, which color of star has the highest surface temperature?
What instrument disperses light to fo
What fraction of a radioactive parent remains after a time interval of 3 half-lives
has passed? 1/8
What age is determined by radiometric methods from the oldest rock samples
so far tested in the solar system?
About 4.5 billion years
What is the function of the primary mirror, or lens, of a telescope?
To collect and focus light
Who built the first successful reflecting telescope?
The theoretical resolving power of an optical telescope depends on what
Newtons Third Law: N3L
If you push on a body with a force F, the body pushes back on you with an oppositely
directed force, -F.
The forces that are equal and oppositely directed are exerted on two different bodies:
the pusher body and the pushee body!
Times of Moon rise and set
Phase Moonrise Moonset
New Dawn Sunset
First Quarter Noon Midnight
Full Sunset Dawn
Third Quarter Midnight Noon
The orbits of the planets are ellipses with the sun at one focus.
A line from the planet to the sun swee
What is science?
A study of skills and processes as well as knowledge and understanding.
It is not an accumulation on facts and principles which have little relevance to
It is concerned with extensive practical investigation and pro