astronomy

Question 1

astronomy

Answer 1

the study of the universe

Question 2

year

Answer 2

the time required for the Earth to orbit once around the sun

Question 3

month

Answer 3

a division of the year that is based on the orbit of the moon around the Earth.

Question 4

day

Answer 4

the time required for earth to rotate once on its axis

Question 5

telescope

Answer 5

an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation

Question 6

refracting telescope

Answer 6

a telescope that uses a set of lenses to gather an focus light from distant objects

Question 7

reflecting telescope

Answer 7

a telescope that uses a curved mirror to gather and focus light from distant object=

Question 8

electromagnetic spectrum

Answer 8

all the frequencies or wavelengths of electromagnetic of radiation