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Astronomy Chapt 4
Question | Answer |
---|---|
Long ago planets were called "wanderers" because they... | appeared to move from one group of stars to another |
Although models of the solar system once placed Earth at the center, later models... | showed the sun at the center |
Which early scientist first claimed that Earth's orbit was elliptical? | Kepler |
These 3 objects orbit the sun... | comets, meteoroids, asteroids |
True or false... The sun holds Earth in orbit. | True |
True or false... The sun affects Earth's ocean tides. | True |
True or false... The sun prevents meteors from damaging Earth | False |
True or false... The sun provides light and heat on Earth | True |
True or false.. The sun gives off more light than any other stars | False |
True or false... The sun is a star of average size. | True |
True or false... The sun is hotter than any other star. | False |
True or false... The sun is almost one billion years old. | False |
The bigger and hotter a star, the more _____ it gives off. | light |
Three properties of stars.... | size, brightness, color |
This astronomer's tool separates light in a star in to color bands and dark lines. | spectroscope |
2 jobs of lenses and mirrors in telescopes... | focus light and magnify images |
Telescopes on Earth often produce blurred images because of... | water vapor, dust, and other materials in the atmosphere |
Telescopes can be carried into space by... | rockets and satellites |
A rocky body that orbits the sun like a planet is called ____ | an asteroid |
A measurement of the distance light can travel in one year is a ___ | light year |
Stars that only seem to be grouped close together form a ____ | constellation |
Hundreds of billions of stars can cluster in a _____ | galaxy |
This kind of telescope CAPTURES and BENDS light | refracting |
This kind of telescope uses mirrors to BOUNCE light | reflecting |
Earth is one of "nine" planet that revolve... | around the sun |
As better tools for observation were invented, scientists and astronomers were able to... | make more exact models of the solar system |
When a meteoroid passes through Earth's atmosphere it becomes a ____ | a bright meteor or "shooting star" |
The asteroid belt is located between the orbits of ___ and ___ | Mars and Jupiter |
True or false... Stars in a galaxy are actually close together. | True |
True or false... Stars in a constellation are actually close together. | False |
What tells about the temperature of a star... | color |
Because the sun is a yellow star the temperature is... | medium-hot |
This astronomer's tool analyzes what elements a star contains... | spectroscope |
Which kind of lens makes light rays spread apart? | concave |
Until the 1500"s scientists believed that ______ was the center of the solar system. | Earth |
The pull of the moon's gravity causes ___ ___ on Earth to rise and fall. | ocean tides |
Be able to draw a labeled sketch of a refracting telescope | INCLUDE: long tube, larger objective convex lens (the light collector), smaller eyepiece convex lens (magnifier), the light rays entering and bending (color code), focal point, eye of the astronomer |
Be able to name the planets in order beginning with the planet nearest the sun. | My Very Educated Mother Just Served Us Noodles |