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Astronomy ch. 1 quiz

Quiz: Astronomy Ch. 1 Studying Space

What are some types of electromagnetic radiation found on the elctromagnetic spectrum? microwaves, radio waves, visible light
How long does Earth take to orbit once around the sun? a year
What makes up the elvectromagetic spectrum? all of the wavelengths of electomagnetic radiation.
How long does Earth take to rotat once on its axis? a day
What does a telescope collect from space and focu for closer observation? electromagnetic radiation
About how long doews the moon take to orbit the Earth? a month
What is a constellation? a region of the sky with a star pattern
What is an imaginary point directly above an observer's head? zenith
What is the imaginary sphere, created by scientists, that surrounds the Earth? a celestial sphere
What is each color of light on the electromagnetic spectrum? a different wavelength of electromagnetic radiation
What blocks most types of electromagnetic radiation and prevents it from reaching Earth's surface? the Earth's atmosphere
What would you not find in the electromagnetice spectrum? a black hole
X-ray telscopes cannot be used on Earth's surface to study space because X-rays... are blocked by the Earth's atmosphere
How did Hubble tell that galaxies were moving apart from each other? by redshift
What evidence shows that the universe is expanding? Galaxies are moving apart
Why do astronomers put telescopes in space? to aviod dust and light pollution in Earth's atmosphere
What uses mirrors to gather and focus? reflecting telescope
What are all of the frequencies or wavelengths of electromagnetic radiation? electromagnetic spectrum
What uses lenses ti gather and focus light? refracting telescope
What is the instrument that collects electromagnetic radiation from the sky and focuses it for better observation? telscope
What is the angular distance between an object such a the sun and the horizon? altitude
What is the line where the sky and the Earth appear to meet? horizon
Who created a sun-centered theory of the universe around 140 CE? Ptolemy
Who proved that there were many galaxies in the universe? Hubble
Who showed that gravity keeps the planets and moons in orbit? Newton
Who was the first to create an Earth-centered theory of the universe? Copernicus
Who showed that the planets move in elliptical orbits around the sun? Kepler
Who was on of the first astronomers to use a telescope to observe objects i space Galileo
Created by: sagoracm