Chapter 7 Vocabulary212
... 1. Spectroscope- used to study star’s characteristics by spreading light
into different wavelengths
2. Nuclear fusion- nuclei of several atoms combine to form on large
3. astronomical unit- average distance between Earth and Sun (150
4. light year- distance light travels in 1 yea ...
astronomy 2 review sheet - Hicksville Public Schools
... 18. Describe a meteor, meteoroid and a meteorite.
METEOR- STREAK OF LIGHT AS A METE0ROID BURNS UP
IN THE EARTH’S ATMOSPHERE.
METEOROID- A CHUNK OF ROCK OR DUST IN SPACE.
METEORITE- A METEOROID THAT HITS THE EARTH’S
19. What force pulls together matter in stars?
20. If you look at an ...
ISP 205 Review Questions, Week 10
... Why don’t all of the pieces just pull themselves together into an infinitesimally small clump at the
center? Gas pressure holds the Sun up. The individual atoms inside the sun are flying around in
random directions and constantly bouncing off each other in new random directions. This keeps them
... Homework 7
Due Friday, November 22, 2013 at 5 p.m., either electronically or on paper.
1. How does solar nebula theory explain the dramatic density difference
between the terrestrial and Jovian planets?
One physical property of a star is apparent magnitude. Which of the
... information is discovered. Which of the following would
NOT be a result of new scientific research and information?
A. Binomial nomenclature is assigned to a recently
identified plant species.
B. An endangered monkey species is put in a reserve for
protection from extinction.
C. A newly discovered c ...
1 - Pitt County Schools
... Chapter 25 Concept Questions
1. Absolute magnitude:
2. Apparent magnitude:
3. Big band theory:
4. Binary star:
Properties of Main Sequence Stars
... Determine approximate values of the luminosity, temperature, mass and radius of an O5 and M5 main
sequence star using the HR diagram on the accompanying page.
the life cycle of stars
... • A star can be classified as one type of
star early in its life, and as a different
type of star as it gets older.
• A star is classified differently as its
Old Sample Exam #2
... _____ 3) How long can a star run on gravity without nuclear fusion? (in years)
a) 1031 b) 1012 c) 1010 d) 107 e) 100
_____ 4) What element cannot be nuclear burned to release energy?
a) oxygen b) iron c) hydrogen d) uranium e) helium
_____ 5) Planetary nebulae are often shaped like a(n)
a) hourglass ...
Fusion in the Sun
... As astronomers observed sunspots they realized they were moving. This
helped us to understand that the sun was rotating.
A Dyson sphere is a hypothetical megastructure that completely encompasses a star and hence captures most or all of its power output. It was first described by Olaf Stapledon in his science fiction novel, ""Star Maker"". The concept was later popularly adopted by Freeman Dyson. Dyson speculated that such structures would be the logical consequence of the long-term survival and escalating energy needs of a technological civilization, and proposed that searching for evidence of the existence of such structures might lead to the detection of advanced intelligent extraterrestrial life. Different types of Dyson spheres correlate with information on the Kardashev scale.Since then, other variant designs involving building an artificial structure or series of structures to encompass a star have been proposed in exploratory engineering or described in science fiction under the name ""Dyson sphere"". These later proposals have not been limited to solar-power stations. Many involve habitation or industrial elements. Most fictional depictions describe a solid shell of matter enclosing a star, which is considered the least plausible variant of the idea (see below). In May 2013, at the Starship Century Symposium in San Diego, Dyson repeated his comments that he wished the concept had not been named after him.