ABeka Grade 8 Science Test 10
Terms in this set (41)
Mars's two moons are Deimos and ____.
What is the largest moon is the solar system?
A Hertzsprung-Russell diagram is a two-dimensional graph that compares stars by their temperature and _____
The Summer Triangle is formed of the stars Deneb, Vega, and _____.
During what phase of the moon is entire sunlit side visible?
The orbits of the planets are symmetrical ovals called _____.
Frozen chunks of ice and dust that orbit the sun are called _____.
The explosion of a star is called a _____.
The convection cells that cover the sun's visible surface are called _____.
What are the flamelike columns of gas that continually erupt from the lowest layer of the sun's atmosphere?
What is the visible portion of the sun?
What galaxy shape is the Milky Way?
What unit of measurement is approximately equal to the distance between the sun and the earth?
describes Venus's backward rotation on its axis
name for the period of time that the moon takes to orbit the earth
imaginary sphere with Earth at the center and the heavenly bodies on its inner surface
imaginary 'band' in the sky in which the sun, moon, and planets travel
the two planets between which the asteroid belt is located
Mars and Jupiter
an object that orbits another object
describes a star that is always above the horizon to an observer at a particular location
What group of small, icy objects orbit the sun outside the orbit of the outermost planet?
The observed brightness that a star would have to an observer located 10 parsecs away is the _____.
What is the cloud of gas and dust that surrounds the center of a comet?
Who developed the low of universal gravitation?
What is a rapidly rotating star that emits directional beams of radio waves?
What Latin word is used to refer to the lunar "seas"?
Which scientific law stated the relationship between a planet's period and average distance from the sun?
third law of planerary
What is the apparent change in the position of an object caused by an actual change in the position of the observer?
What is the largest galaxy in the Local Group?
Which category of stars includes the sun?
With which planet do the Trojan asteroids share an orbit?
What is an object so massive and dense that not even light can escape its gravity?
the largest planet in our solar system
known for its ring system
the outermost planet in our solar system
the fastest-moving planet
sometimes called the "morning star" and "evening star"
gas giant that seems to lie on its side
notable feature is Olympus Mons
A planet's closest approach to the sun is ______
The idea that the earth is a the center of the universe and that the sun, planets, and stars all revolve around the earth is _____ view.