3.2 - Using Technology To See Beyond the Universe

Question 1

What is the electromagnetic spectrum?

Answer 1

• The range of wavelengths over which electromagnetic energy extend

Question 2

High energy waves have a _______ frequency and a _________ shorter wavelength

Answer 2

High energy waves have a higher frequency and a shorter wavelength

Question 3

What are the waves from lowest to highest energy

Answer 3

Radio, Microwave, Infrared, Visible, UV, X-ray, Gamma ray

Question 4

What do radio telescopes do?

Answer 4

Collect and analyze radio waves from other planets and bodies and space

Question 5

Why can radio waves be used during day and night?

Answer 5

Because they are not affected by weather, pollution, the atmosphere

Question 6

What do radio telescopes consist of?

Answer 6

A metal dish with an antenna that receives radio waves and transforms them into an electrical signal

Question 7

True or false?

Several radio telescopes can be combined (called interferometry) to improve the accuracy of radio waves

Answer 7

False. Several radio telescopes can be combined (called interferometry) to improve the accuracy of radio IMAGES

Question 8

The ______ the distance between radio telescopes, the more accurately they can measure position.

Answer 8

The greater the distance between radio telescopes, the more accurately they can measure position

Question 9

How can accuracy be improved when measuring position using radio telescopes?

Answer 9

By arranging the telescopes in an array

Question 10

What do astronomers use to study different forms of radiation in space?

Answer 10

Various satellites

Question 11

What type of radiation can be used to view planets in different solar systems?

Answer 11

Planets in distant solar systems can be viewed in the infrared spectrum

Question 12

What type of radiation is studied using leftover energy from the beginning of the universe?

Answer 12

Fluctuations in microwave energy left over from formation of the universe

Question 13

What type of energy is emitted from black holes?

Answer 13

X-rays are emitted from black holes

Question 14

Which rays can astronomers use various satellites to see bursts of in different galaxies?

Answer 14

Gamma ray bursts in distant galaxies

Question 15

What is a space probe?

Answer 15

• Unmanned satellites or remote-controlled “landers’ that are used to explore areas or objects in space that are dangerous or difficult to explore
• Many space probes have been sent out to fly by, orbit or land on planets in our solar system

Question 16

True or False

THe only place that has been explored by humans in space is the Moon, and Mars

Answer 16

False. The only place that has been explored by humans in space is the Moon