Stars Star Measurement The Sun Planets Famous Scientist

100

black hole
The final stage in the evolution of the most massive stars is a ________.

100

white dwarf
The point in stellar evolution when a star has used up all its fuel and is radiating away its remaining thermal energy as light is the _______ stage.

100

photosphere
The visible surface of the sun is called the ______.

100

Dwarf planet
Pluto is now classified as a ______ in our solar system.

100

Sir Isaac Newton
This scientist determined the nature of the forces that kept the planets in their orbits.

200

red
Which color stars have the coolest surface temperature?

200

stellar parallax
The distance to stars can be determined from ________.

200

sunspots
Dark, cooler patches on the surface of the sun are called _________.

200

Jupiter and Mars
The belt (orbit) of the asteroids is located between _________.

200

Nicolaus Copernicus
The first modern astronomer to propose a Sun-centered universe was _______.

300

blue
Which color stars have the highest surface temperature?

300

main – sequence star
The sun belongs to this class of stars.

300

chromosphere
The layer of the solar atmosphere directly above the photosphere is referred to as the ________.

300

Neptune
________ has the great, dark spot on its surface.

300

Johannes Kepler
Three laws of planetary motion were discovered by ______.

400

main – sequence star
Most stars are in this stage of evolution.

400

magnitude
The measure of a star’s brightness is called its _________.

400

corona
The outermost layer of the Sun is called the ________.

400

Venus
The surface features of ________ are known only through satellite radar mapping.

400

Galileo
This scientist was the first to use the telescope in astronomy.

500

black hole
These stars are produced during a supernova event.

500

Retrograde motion
The apparent westward “drift” of the planets compared to the background stars is called _________.

500

photosphere
The layer of the Sun that radiates most of the light that reaches Earth is called the _______.

500

Venus
________ has a hot, turbulent atmosphere dominated by carbon dioxide.

500

Ptolemy
The Earth-centered system of the universe that was accepted for nearly seventeen centuries was presented in a treatise called the Almagest that was written by _______.

Astronomy

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