Chapter 18.2 Review (8th) Question Preview (ID: 36831)


Telescopes. TEACHERS: click here for quick copy question ID numbers.

Humans can see radiation from
a) ultraviolet light.
b) infrared light to ultraviolet light.
c) infrared light.
d) red light to blue light.

The simplest optical telescope contains
a) an objective lens and a mirror.
b) two objective lenses.
c) an obtuse lens and a lens in the eyepiece of the telescope.
d) an objective lens and a lens in the eyepiece of the telescope.

What is the electromagnetic spectrum made of?
a) all the wavelengths of electromagnetic radiation
b) magnetic metals
c) waves of gamma rays
d) bands of heat

How does the atmosphere affect astronomical observations?
a) It focuses visible light.
b) It blocks most electromagnetic radiation.
c) It blocks all radio waves.
d) It does not affect astronomical observations.

An optical telescope is an instrument that
a) collects and focuses visible light for closer observation.
b) collects and focuses invisible light for closer observation.
c) collects visible light and breaks it apart.
d) collects invisible light and breaks it apart.

One lens which collects light and forms an image at the back of the telescope
a) Focal point
b) Eyepiece
c) Objective lens
d) Radio telescope

Why do astronomers put telescopes in space?
a) to reduce air pollution
b) to get closer to objects in space
c) to avoid interference from the Earth’s atmosphere
d) to avoid noise pollution

What is one advantage of reflecting telescopes?
a) They use smaller mirrors.
b) They focus perfect images.
c) They touch up images.
d) They have two focal points.

The point where the rays of light that pass through a lens or that reflect from a mirror converge
a) Objective lens
b) Focal point
c) Eyepiece
d) Optical telescope

An instrument that gathers electromagnetic radiation from objects in space and concentrates it for better observation
a) Microscope
b) Telescope
c) Periscope
d) Stethoscope

uses mirrors to gather and focus light
a) electromagnetic spectrum
b) telescope
c) reflecting telescope
d) refracting telescope

all of the frequencies or wavelengths of electromagnetic radiation
a) electromagnetic spectrum
b) telescope
c) reflecting telescope
d) refracting telescope

uses lenses to gather and focus light
a) electromagnetic spectrum
b) telescope
c) reflecting telescope
d) refracting telescope

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