Mid Term Exam 2021

Question 1

What is the distance in length between 2 peak waves?

Answer 1

Wavelength

Question 2

What is the range of light waves that expend from the wavelength of radio waves to gamma rays?

Answer 2

Electromagnetic Spectrum

Question 3

What is the range of light waves that we can SEE?

Answer 3

Visible

Question 4

What is the number of times larger an object appears through a telescope compared to the naked eye?

Answer 4

Magnification

Question 5

What is the measure of the clarity of images?

Answer 5

Resolution

Question 6

What is the spectrum produced from a hot gas?

Answer 6

Emission line spectrum

Question 7

What color is the hottest star?

Answer 7

Blue

Question 8

What do we call the lens that is thicker in the middle and bends light to a focal point?

Answer 8

Convex

Question 9

What is it called when man made light reduces the visibility of stars?

Answer 9

Light pollution

Question 10

What is known as the rebounding of light off of a smooth surface?

Answer 10

Reflection

Question 11

The process in which our solar system was formed from a cloud of gas and dust is called what?

Answer 11

Accertion

Question 12

The planets that are close to the sun, mostly rock, and have a high density are called what?

Answer 12

Rocky planets

Question 13

What planet use to be a planet but isn’t anymore?

Answer 13

Pluto

Question 14

Where are most asteroids located?

Answer 14

Asteroid belt

Question 15

What are the evidence of collisions of objects into planets and moons?

Answer 15

Impact craters

Question 16

What are the smaller objects that are less than 100km across that collided and formed in the planets of our solar system?

Answer 16

Planetesimals

Question 17

What do we call the giant spherical shell surrounding the rest of the solar system?

Answer 17

Oort Cloud

Question 18

What do we call the planets that are far from the sun, mostly gas, and have a low density?

Answer 18

Gas giants

Question 19

What do we call it when a solid object is heated and changes color and give off light?

Answer 19

Black body Radiation

Question 20

The spectrum produced when visible light passes through a cloud of cool gas in front of a continuous source of light?

Answer 20

Absorption line spectrum

Question 21

What is the measure of the amount of light collected by a telescope?

Answer 21

Brightness

Question 22

What is the effect that will change the wave length (light or sound) due to the motion of the source?

Answer 22

Doppler Effect

Question 23

What do we call the number of wave peaks (crests) that pass a certain point in a period of time that is measured in hertz?

Answer 23

Frequency

Question 24

This is caused by a star moving away from the observer.

Answer 24

Redshift

Question 25

What is the height of waves called? (How tall the waves are)

Answer 25

Amplitude

Question 26

What is the color of the coolest stars?

Answer 26

Red

Question 27

This is caused when a star is moving toward the observer.

Answer 27

Blue shift

Question 28

When the build up of sound waves reach a person, what does it create?

Answer 28

Sonic Boom

Question 29

What do we call the bending of light as it passes through an object? (I.E. lens)

Answer 29

Refraction

Question 30

The simple rule that gives us the distance of the planets from the sun.

Answer 30

Bode’s Law

Question 31

What else besides asteroids are left over debris from the formation of the solar system?

Answer 31

Comets

Question 32

What is known as a huge cloud of star dust?

Answer 32

Solar Nebula

Question 33

What is the small rocky debris that people see in the solar system before they hit the surface of the earth?

Answer 33

Meteors

Question 34

What is a donut shaped region of icy bodies beyond the orbit of Neptune?

Answer 34

Kuiper Belt

Question 35

The gas that is collected in the center of the accretion disc.

Answer 35

Protosun

Question 36

What is the space debris that lands on the earths surface intact?

Answer 36

Meteors

Question 37

What creates a spectra?

Answer 37

Prism, Raindrops, CD’s

Question 38

What happens when things get hotter?

Answer 38

The color changes, The wavelengths shorten

Question 39

What do the redshift and blueshift of a star tell us?

Answer 39

Velocity

Question 40

What do we call a telescope that has 2 lenses?

Answer 40

Refraction telescope

Question 41

What increases in a telescope with long focal length?

Answer 41

Magnification

Question 42

What makes stars twinkle?

Answer 42

Turbulence of the atmosphere

Question 43

What do the waves do when a boat moves faster?

Answer 43

Compress

Question 44

What does black body radiation tell us about the stars?

Answer 44

Temperature

Question 45

What do we use to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects?

Answer 45

Radio telescopes

Question 46

When would you use an optical telescope?

Answer 46

To monitor temperature

Question 47

What do we call the distance between the lens and the focal point?

Answer 47

Focal length

Question 48

Why is it difficult to see stars in the city?

Answer 48

Light pollution

Question 49

What happens when the boat or plane moves faster than the waves it produces and forms a V shape?

Answer 49

the waves overlap

Question 50

Increasing the telescopes diameter will increase what?

Answer 50

Magnification

Question 51

What are the 2 parts of the electromagnetic spectrum that makes it to the earth’s surface?

Answer 51

Visible light and radio waves

Question 52

Why is the Hubble space telescope better than the ones on earth?

Answer 52

The light does not pass through the atmosphere

Question 53

What can you tell me about the planets of the solar system?

Answer 53

Planets orbit in the same direction, Orbit in nearly the same plane, Most rotate in the same direction.

Question 54

Why did Pluto get kicked out of the planet club?

Answer 54

It is mostly make of gas

Question 55

Why are the inner planets made of mostly rock and the inner planets mostly made of gas?

Answer 55

The solar wind from the start of fusion when our star was born pushed lighter material out further.

Question 56

Why do we see shooting stars?

Answer 56

Friction causing the rocks to heat up and burn

Question 57

What is the source of most of the comets in the universe?

Answer 57

Oort Cloud

Question 58

What does Bode’s law predict?

Answer 58

That there should be a planet between Jupiter and Mars

Question 59

What are found between Jupiter and Mars?

Answer 59

Asteroids

Question 60

Why is our sun considered a 2nd generation star?

Answer 60

Because the solar system is made up of all the elements in the periodic table

Question 61

Why did the dinosaurs go extinct?

Answer 61

Due to the impact of an asteroid

Question 62

What is the region of leftovers from the solar systems early history?

Answer 62

Oort Cloud