Question text
40 A teacher asks two students to describe redshift. Student 1 says: It is a decrease in the observed wavelength of electromagnetic radiation from stars. Student 2 says: It occurs because stars and galaxies move away from the Earth. Which students are correct? A both student 1 and student 2 B student 1 only C student 2 only D neither student 1 nor student 2
40 A teacher asks two students to describe redshift.
Student 1 says: It is a decrease in the observed wavelength of electromagnetic radiation
from stars.
Student 2 says: It occurs because stars and galaxies move away from the Earth.
Which students are correct?
A both student 1 and student 2
B student 1 only
C student 2 only
D neither student 1 nor student 2
Select your answer: