The Universe

Question 1

speed of light

Answer 1

3x10^5 km/sec

Question 2

1 light year

Answer 2

9.4x10^12 km

Question 3

when and who proposed the big bang theory

Answer 3

1927, Georges Lemaitre

Question 4

2 evidences of big bang theory

Answer 4

1. red shift
2. background radiation

Question 5

4 basic forces

Answer 5

1. gravity
2. electromagnetic force
3. strong nuclear force
4. weak nuclear force

Question 6

surface of the sun

Answer 6

photosphere

Question 7

cool regions on the suns surface

Answer 7

sunspots

Question 8

small region above the surface of the sun

Answer 8

chromosphere

Question 9

highly rarefied region

Answer 9

corona

Question 10

the sun is this kind of star

Answer 10

yellow dwarf

Question 11

point where the planet is closest to the sun

Answer 11

perihelion

Question 12

point where the planet is farthest from the sun

Answer 12

aphelion

Question 13

alignment of 3 celestial objects

Answer 13

syzygy

Question 14

completely hidden eclipse

Answer 14

occultation

Question 15

partially hidden eclipse

Answer 15

transit

Question 16

the object completely covers the sun

Answer 16

umbra

Question 17

the object is too small to cover the sun

Answer 17

antumbra

Question 18

the object is only partially in front of the sun

Answer 18

penumbra

Question 19

brightest star

Answer 19

sirius

Question 20

largest star

Answer 20

VY canis majoris

Question 21

brightest star in Orion

Answer 21

rigel star

Question 22

bright red star in Orion

Answer 22

betelgeuse

Question 23

relatively low smooth dark area of the moon

Answer 23

maria

Question 24

cratered, rugged highlands of the moon

Answer 24

terrae

Question 25

composition of maria

Answer 25

basalt

Question 26

composition of terrae

Answer 26

anorthosite

Question 27

4 theories of moon formation

Answer 27

1. fission 2. capture 3. condensation 4. theia

Question 28

the point where the moon is closes to the earth

Answer 28

perigee

Question 29

the point where the moon is farthest from the earth

Answer 29

apogee

Question 30

deepest borehole

Answer 30

Kola Superdeep Borehole

Question 31

fastest seismic waves

Answer 31

p waves

Question 32

second fastest wave

Answer 32

s wave

Question 33

combined body waves

Answer 33

rayleigh waves

Question 34

sideways shearing waves

Answer 34

love waves

Question 35

pattern seen in iron meteorites

Answer 35

widmanstatten pattern

Question 36

most primitive meteorites

Answer 36

chondrites