Chapter 6.3 and 6.4

Question 1

Which telescopes can be built on the ground?

Answer 1

Radio and Visible Light telescopes

Question 2

Which telescopes can be built in space?

Answer 2

1) Gamma Ray.
2) Ultra Violet.
3) X Ray
4) Most Infrared

Question 3

What telescopes can be built on earth?

Answer 3

1) Visible Light
2) Microwave
3) Shortwave Radio

Question 4

Atmospheric Windows

Answer 4

The spectrum of light he earth lets in or does not let in to the atmosphere.

Question 5

Why is the resolution power of the arecibo radio telescope weak despite its large size?

Answer 5

Resolution power is equal to wavelength over diameter. The wavelengths of radio light is very long so despite the size of the dish it has the same resolving power as the human eye.

Question 6

Interferometer

Answer 6

The use of multiple telescope spaced apart to create a more complete image.

Question 7

Interferometric array.

Answer 7

Use of multiple radio telescopes in an array to observe light sources with better resolution that optical telescopes. VLA in New Mexico

Question 8

What are some solution to observing infrared from earth?

Answer 8

Either telescopes can be built high above sea level such as the Mauna Key Observatory 4200 meters above sea level. Or telescopes can be mounted on planes such as SOFIA and observe light from high above the lower levels of the atmosphere. However even with such adaptations some infrared light must be observed from space.

Question 9

HST

Answer 9

Observes Visible, Infrared, and UV light.

Question 10

Lanksy

Answer 10

Basic Unit of Measurement for Flux Density

Question 11

Flyby

Answer 11

When a spacecraft first approaches then flies by an object. Voyager 1 and 2

Question 12

Orbiters

Answer 12

Do more reconnaissance work that fly by spacecraft. But there are more expensive and more difficult to make because they have to use limited fuel and make risky maneuvers to make it into orbit. Can be used to monitor the weaver, map the surface of a planet, composition of the atmosphere, rock types, etc.

Question 13

Landers

Answer 13

Spacecraft which touch down and remain on the surface. Very expensive and as a result can only survey limited areas of the surface. Measure surface chemistry and physical properties of surface rocks and soils.

Question 14

Atmospheric Probes

Answer 14

Descend to the atmosphere of planets and send back data on temperature, pressure, wind speed, and chemical composition.

Question 15

Large Hadron Collider

Answer 15

Collide particles at high speeds to simulate and study th conditions of the early universe. Used to understand subatomic particles.

Question 16

Alpha Magnetic Spectrometer

Answer 16

Used to study rare subatomic particles on the international space station such as dark matter, antimatter, and cosmic rays.

Question 17

Neutrinos

Answer 17

Elusive elementary particles created in the PP chain of stars which are hard to detect. Can pass through earth and you without any interactions whatsoever.

Question 18

Neutrino Detectors

Answer 18

Deep underground to ensure that nothing other than neutrinos is interacting with the detector.

Question 19

Gravitational Wave

Answer 19

Disturbances in the gravitational field.

Question 20

LIGO and Virgo Inferometer

Answer 20

Detect minute shift is light as a result of gravitational waves.

Question 21

Computer Modeling

Answer 21

Used to model the interior of earth and stars and galaxies as a whole which cannot be directly observed.

Question 22

Cosmic Microwave Background Radiation

Answer 22

The leftover results of the big bang which cannot be eliminated when observing microwaves in the universe.