Review for CBA

Review for CBA

Moon Phases

• The moon revolves the Earth = Counter Clockwise Direction. 

• Half of the Moon always reflects light.

• From Earth, we see different amounts of light reflecting off the Moon.

• 8 Moon phases = one cycle

• One cycle = 4 weeks, about one month

• One phase lasts= 3.5 days

Moon Phases

• Waxing - Get brighter or grow

• Waning - Get darker or shrink

• 0% illuminated (lit up) = New Moon

• 25 % illuminated (lit up) = Crescent Moon

• 50 % illuminated (lit up) = Quarter Moon

• 75 % illuminated (lit up) = Gibbous Moon

• 100 % illuminated (lit up) = Full Moon

Multiple Choice

Which Moon phase do you see?

• New Moon

• Waxing Gibbous

• Full Moon

• Waning Crescent

Multiple Choice

Which Moon phase do you see?

• Waxing Crescent

• Waning Crescent

• Waxing Gibbous

• Waning Gibbous

Multiple Choice

If you see a first quarter tonight, when will you most likely see a full moon?

• In 3.5 days

• In 14 days

• In 7 days

• In 21 days

Hertzsprung–Russell 

(H-R Diagram)

• Relationship between a star's magnitude/luminosity/brightness and the star's temperature.

• X axis = Temperature decreases from left to right

• Y axis= Luminosity increases from bottom to top

• White dwarfs are hotter and dimmer than giants.

• Super giants are brighter than giants.

• Main sequence - as stars get brighter they get hotter.

Multiple Choice

The Hertzsprung- Russell diagram

• compares stars by plotting size against temperature.

• compares stars by plotting luminosity against temperature.

• compares our sun against only other main sequence stars.

• compares stars by plotting luminosity against color.

Multiple Choice

What is the approximate surface temperature of the star Arcturus?

• 10,000 K

• 4,200 K

• 7,800 K

• 6,000 K

Electro Magnetic Spectrum (EMS)

• Long wavelength = low frequency=low energy

• Short wavelength = high frequency = high energy

• Radio waves have longer wavelength than microwave.

• Gamma rays have higher frequency than X-rays

• Ultraviolet light has more energy than Infrared light.

Multiple Choice

True or False: X-rays have more energy than Microwaves.

• True

• False

Multiple Choice

Which electromagnetic radiation has the longest wavelength and lowest energy?

• Microwaves

• Ultraviolet light

• Visible light

• Infrared light

Alfred Wegner

• Continental Drift Theory

• 5 pieces of evidence

• Puzzle like fit

• Fossils

• Glaciers

• Mountains

• Coal deposits

Multiple Choice

The gradual movement of the continents across the earth's surface through geological time is called

• Plate Tectonic Theory

• Theory of Pangaea

• Continental Drift Theory

Multiple Select

Check all the pieces of evidence that Wegner cited as evidence for Continental Drift.

• Fossils

• Coal deposits

• Human remains

• Mountains

• Tectonic plate movement

Plate Tectonics

• Wegner couldn't prove how or why

• Harry Hess found evidence for mid-ocean ridge

• Led to the phenomenon of Sea Floor Spreading

• The Earth is composed of Crust, Mantle, and Core

• The Crust is divided into sections called plates.

• Two types of plates: Oceanic (heavier) & Continental (lighter)

• Convection currents in the Mantle move plates.

Multiple Choice

The process that causes the movement of the tectonic plates that make up the earth's crust is

• Subduction

• Volcanoes

• Convection Currents

• Seafloor spreading

Multiple Choice

True or False: Oceanic plates are lighter than continental plates.

• True

• False

Plate Boundary - Convergent

• The plates that make up the Earth move at different boundaries

• Fault line = Plate boundary

• Convergent = Collide

• Continental - continental convergent boundary - similar plates - creates folded mountains.

Plate boundary - Convergent

• Oceanic - continental convergent boundary - heavier oceanic sinks and subducts - creates ocean trench and volcanic mountains

• Oceanic - oceanic convergent boundary - similar plates - older oceanic crust will subduct - creates volcanic arch islands.

Multiple Choice

Which plate boundary is convergent oceanic-continental?

• Boundary 1

• Boundary 2

• Boundary 3

• Boundary 4

• Boundary 5

Multiple Choice

Which plate boundary is convergent continental-continental?

• Boundary 1

• Boundary 3

• Boundary 4

• Boundary 5

Multiple Choice

Which plate boundary is convergent oceanic-oceanic?

• Boundary 1

• Boundary 3

• Boundary 4

• Boundary 5

Multiple Choice

What crustal feature is formed at boundary 5?

• Folded mountains

• Mid-ocean ridge

• Volcanic arc islands

• Ocean trench

Plate Boundary - Divergent

• Divergent = divides

• oceanic - oceanic divergent - magma escapes through the opening creating underwater volcanic mountains - mid-ocean ridge

• Continental-continental divergent boundary - creates valley

Multiple Choice

Which plate boundary is oceanic-oceanic divergent?

• Boundary 1

• Boundary 2

• Boundary 4

• Both Boundary 1 & 2

Multiple Choice

What crustal feature is formed at plate boundary 2?

• Valley

• Folded mountain

• Mid-ocean ridge

• Fault line

Plate Boundary - Transform

• Transform = slides

• Transform boundaries result in earthquakes

• Transform boundaries create fault lines.

Multiple Choice

What crustal feature is formed at a transform boundary?

• Mid-ocean ridge

• Volcanic Islands

• Fault line

• Earthquake

Multiple Choice

Which of the following is a transform boundary?

• Boundary C

• Boundary X

• Boundary B

• Boundary Z