Test#1

Question 0

Eccentricity

Answer 0

Measure of how much an ellipse deviates from a perfect circle

Question 1

Apparent retrograde motion

Answer 1

A planet appears to move westward with respect to the background stars

Question 2

Ecliptic

Answer 2

Suns apparent path to the constellations

Question 3

Newtons 1st Law of Motion

Answer 3

An object will remain at rest or move in a straight line at constant speed unless a force acts

Question 4

Angular momentum

Answer 4

Momentum attributable to rotation or revolution

Question 5

Alpha decay

Answer 5

Too many protons in nucleus; becomes unstable. Nucleus loses 2 protons and 2 neutrons causing it to change into another element. The sum of the mass numbers of the product is equal to the mass number of the parent nucleus

Question 6

Electromagnetic radiation

Answer 6

Light of all types form radio waves to gamma rays

Question 7

Electromagnetic spectrum

Answer 7

The complete spectrum of light including radio waves, infrared, visible light, ultraviolet light, x rays, and gamma rays

Question 8

Seafloor spreading

Answer 8

New sea floor crust at mid ocean ridges

Question 9

Gamma rays

Answer 9

Lights with very short wave lengths

Question 10

Photon

Answer 10

An individual particle of light

Question 11

Planetary nebula

Answer 11

Glowing cloud of gas ejected from low mass stars at the end of it’s life

Question 12

Velocity

Answer 12

Combination of speed and direction of motion

Question 13

Differentiation

Answer 13

Gravity separates materials according to density

Question 14

Wavelength

Answer 14

The distance between adjacent peaks of a wave

Question 15

Local group

Answer 15

A group of 40 galaxies

Question 16

Solar wind

Answer 16

A stream of charger particles ejected from the sun

Question 17

Metamorphic rock

Answer 17

Rock made from igneous or sedimentary rock

Question 18

Aurora borealis

Answer 18

Dancing lights in the skies cause by charged particles

Question 19

3 types of rock

Answer 19

Igneous, sedimentary, metamorphic

Question 20

Where did the earths atmosphere and oceans come from?

Answer 20

Impacts of icy comets and volcanic outgassing

Question 21

Ice age

Answer 21

Period of global cooling where glaciers and snow existed

Question 22

Cosmic microwave background

Answer 22

Radiation from the Big Bang

Question 23

Newton’s 3rd Law of Motion

Answer 23

Principle that for any force, there is always an equal and opposite reaction force

Question 24

The six periods on the Paleozoic era are

Answer 24

1. Cambrian 2. Ordovician 3. Silurian 4. Devonian 5. Carboniferous 6. Permian

Question 25

Proterozoic eon

Answer 25

* earliest evidence of oxygen in atmosphere * oldest eukaryotic fossils * build up of oxygen

Question 26

When where mammals prominent?

Answer 26

Tertiary period of the Cenozoic era

Question 27

Phanerozoic eon is divided into three main eras

Answer 27

1. Paleozoic "old life" 2. Mesozoic "middle life" 3. Cenozoic "recent life"

Question 28

What are the three periods in the Mesozoic era?

Answer 28

1. Triassic 2. Jurassic 3. Cretaceous

Question 29

What did the Big Bang produce?

Answer 29

H, He, Li | Hydrogen, helium, lithium

Question 30

Radiometric dating

Answer 30

Determining the age of a rock

Question 31

Semi-major axis

Answer 31

1/2 the distance across the long axis of an ellipse

Question 32

Dinosaurs prominent in what era?

Answer 32

Mesozoic era

Question 33

Supernova

Answer 33

Explosion of a star

Question 34

Big Bang

Answer 34

Event thought to mark the birth of the universe

Question 35

Accretion

Answer 35

Small objects gathering together to make larger objects

Question 36

Atoms

Answer 36

Made of protons and neutrons

Question 37

Blueshift

Answer 37

Spectral features shifted to shorter wave length

Question 38

Redshift

Answer 38

Wavelengths shift to longer wavelengths

Question 39

Stars produce what?

Answer 39

Carbon and oxygen

Question 40

Mass number

Answer 40

The number of protons and neutrons in an atom

Question 41

Astrobiology

Answer 41

Study of the universe combined with the study of life

Question 42

Silurian period

Answer 42

- Paleozoic era | - animals colonize land

Question 43

Newtons 2nd law of motion

Answer 43

Law stating how a net force affects an objects motion

Question 44

Frequency

Answer 44

Rate at which peaks of light of a wave pass by a point

Question 45

What period were in the Cenozoic era?

Answer 45

Tertiary period

Question 46

Lunar Maria

Answer 46

Regions of the moon that look smooth from earth but are basins

Question 47

Beta decay

Answer 47

The ratio of protons and neutrons is unbalanced do a neutron inside the nucleus breaks down and changes into a proton, it emits an electron. The atomic number goes up by one & mass stays the same.

Question 48

Ordovician period

Answer 48

- Paleozoic era | - plants and fungi colonize land

Question 49

Erosion

Answer 49

Wearing down or building up of geological features by wind

Question 50

Nucleus

Answer 50

Compact center of an atom made from protons and neutrons

Question 51

Cambrian period

Answer 51

- Paleozoic era | - cambrian explosion of animal diversity

Question 52

Kepler's 2nd law

Answer 52

As a planet moves around it's orbit, it sweeps out equal areas in equal times

Question 53

Archean eon

Answer 53

- oldest stromatolites | - oldest microfossils evidence of life

Question 54

Gamma decay

Answer 54

An unbanned unstable nucleus releases access energy by emitting a gamma ray. Mass number and atomic number are constant. Nucleus rearranges itself into a lower energy form

Question 55

Triassic period

Answer 55

Mammals and dinosaurs appear

Question 56

Aphelion

Answer 56

The point at which an object orbiting the sun is farthest from the sun

Question 57

Alpha particle

Answer 57

Made of two protons and two neutrons; helium particle

Question 58

When did hominids appear?

Answer 58

In the tertiary period of the Cenozoic era

Question 59

Electron capture

Answer 59

Electrons jump into nucleus, atomic number goes down mass number remains constant opposite of beta decay

Question 60

Keplers 3rd law

Answer 60

The square of a planets orbital period is proportional to the cube of it's average distance from the sun

Question 61

Doppler effect

Answer 61

Effect that shifts wavelengths of spectral features in objects

Question 62

Ellipse

Answer 62

Type of oval that happens to be the shape of bound orbits