Observing Universe 7.03

The telescope that focuses visible light

I. Refracting telescope

II. Reflecting telescope

III. Radio telescope

• I only

• II only

• III only

• I and II

Which of the following emits visible light?

• Star

• Moon

• Planet

• Satellite

Which type of telescope is shown in the figure

below?

• Refracting telescope

• Reflecting telescope

• Radio

• Space telescope

Which of the following could increase the light gathering

power of the telescope in the figure

below?

• Adaptive optics

• A larger eyepiece

• Multiple small mirrors

• Thicker lenses

In which wavelength would you expect the

hottest stars to emit most of their energy?

• Gamma rays

• Microwaves

• Radio waves

• Visible light

Which best describes Hubble?

• Infrared telescope

• Radio telescope

• Refracting telescope

• Space telescope

Which is NOT a good place to build a radio

telescope?

• A location near a radio station

• A location that is remote

• A location with a large cleared area

• A location with dry air

Which of the following is true of the telescope

below?

• The eyepiece and the objective lens are concave lenses

• Light is bent as it goes through the objective lens

• Light is reflected from the eyepiece lens to the objective lens

• The eyepiece lens can be made of many smaller lenses

Identify the telescope that orbits around the earth and collects visible light

• Hubble space

• Spitzer

• James webb

• Rocket

Why we need space telescopes?

• some waves do not penetrate the Earth's atmosphere

• to get closer to celestial objects

• to absorb some visible light that is not possible to collect

• as we cannot see from ground