Study Guide 09/08/14 Flashcards
Which of the following scientists thought the Earth was at the center of the universe?
Ptolemy
What blocks most types of electromagnetic radiation?
the Earth’s atmosphere
What did red shift tell Hubble about the universe?
The universe if getting larger
Why do scientists put telescopes in space?
To avoid interference from Earth’s atmosphere.
How long does Earth take to orbit once around the sun?
A year
How long does Earth take to rotate once on its axis?
A day
About how long does the moon take to orbit Earth?
A month
Which of the following is not found on the electromagnetic spectrum?
Black hole
Uses lenses to gather and focus light
refracting telescope
uses mirrors to gather and focus light
reflecting telescope
all the wavelengths of electromagnetic radiation
electromagnetic spectrum
the angle between an object and the horizon
altitude
an imaginary sphere that surrounds the Earth is the?
Celestial sphere
the line where the sky and earth appear to meet is the?
horizon
An imaginary point directly above an observer’s head is a ?
zenith
