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Astronomer's Toolbox
Gamma Detectors Quiz - Level 1
Gamma Detectors Quiz
Gamma-rays can be detected
[A] by the human eye
[B] by reflecting telescopes on the ground
[C] only when they interact with other matter
[D] the same way as radio waves
Gamma-rays cannot be easily focused because
[A] they do not originate from one point
[B] it is too hard to bend the path of a gamma-ray without changing its energy
[C] they can only be observed in space
[D] it would cost too much to focus gamma-rays
One way of detecting gamma-rays is to
[A] observe from the bottom of the ocean
[B] observe only during a clear day
[C] observe an electron-positron pair generated by the gamma-ray
[D] use a charged couple device
Astronomers want to focus gamma-rays because
[A] they need to be able to increase the effective "signal" from cosmic sources
[B] they want to be able to create a 2-dimensional image of the gamma-ray sky
[C] the results will allow them to do better science
[D] all of the above