Exam 5: Light and Telescopes

In a reflecting telescope the primary is a _______.

The amount of energy a photon carries depends on its wavelength.

Infrared space telescopes must have their mirror cooled to very low temperatures because otherwise it would thermally emit too much _______ itself.

Why might astronomers someday establish an observatory on the Moon 

Telescopes in space do not have the 'seeing' issues of ground-based telescopes.

A laser guide star is a true star.

Both optical and radio telescopes can suffer from light pollution.

If you focus a store-bought telescope at the full Moon on a typical clear night, the full Moon will be viewed as _________________.

Photographic plates are commonly used by astronomers today.

What is the frequency of the shortest wavelength light that can be detected by the average human eye

The light-gathering power of a telescope increases as the size of the objective increases.

Which blurs our Earth-based view of celestial objects

The highest frequency and highest energy band of the electromagnetic spectrum is the ___________________ band.

Fill in the blanks to produce a correct statement: The above computer model shows concentric circles, otherwise known as ________________, from ________ star(s).

Which of the following types of electromagnetic radiation has the lowest energy

__________ in Earth's atmosphere absorbs most ultraviolet radiation coming from the Sun.

A(n) ____________________ is used to measure the brightness and color of stars.

Which has the larger light-gathering power

Light can behave as a particle or as a wave.

in the following images, which is the representational-color image and for which band of the electromagnetic spectrum