2 8th review

Poll

Would you rather...

• Take a 1 week trip around the foreign country of your choice

• Take a 4 week trip around the U.S.

Poll

Would you rather...

• Have a piggy bank that doubles any money you put in it

• Find ten dollars under your pillow every time you wake up

Poll

Would you rather...

• Be able to talk to animals and have them understand you but you can't understand them

• Be able to understand animals but they can't understand you

Poll

Would you rather...

• Sneeze uncontrollably for 15 minutes once every day

• Sneeze once every 3 minutes of the day while you are awake

Poll

Would you rather...

• Visit every country in the world

• Be able to play any musical instrument

Poll

Would you rather...

• Every vegetable you eat tastes like candy and still be healthy

• All the water you drink tastes like a different beverage every time you drink it

Poll

Would you rather...

• Have a robot do your chores

• Have a robot do your homework

Poll

Would you rather...

• Have octopus arms

• Have caterpillar legs

Poll

Would you rather...

• Only be able to walk on all fours

• Only be able to walk sideways like a crab

Poll

Would you rather...

• Have a tail that can't grab things

• Have wings that can't fly

Poll

Would you rather...

• Eat a bowl of spaghetti without sauce

• Eat a bowl of sauce without spaghetti

Poll

Would you rather...

• Have an elephant-sized dog

• Have a dog-sized elephant

Weather Fronts

Multiple Choice

Look at the image. Which city is about to have a cold front?

• El Paso

• Los Angeles

• Tampa

• Chicago

Multiple Choice

Cold fronts usually travel from...

• South to North

• North to South

Multiple Choice

When a cold front passes through, the temperature gets warmer!

• True

• False

Multiple Choice

What happens when a cold front comes through?

• Temperature gets cooler and heavy rain, thunderstorms, or snow occur

• Temperature gets warmer and it produces a nice gentle rain

Multiple Choice

Which city is about to have a warm front?

• St. Louis

• Denver

• Atlanta

Multiple Choice

Warm fronts usually travel from...

• North to South

• South to North

Multiple Choice

When a warm front passes through, what usually happens?

• The temperature increases (gets warmer) and brings gentle, steady rain over a few days

• The temperature decreases (gets cooler) and brings storms (heavy rain or snow)

Multiple Choice

Which of the following is a cold front?

High Pressure System

• Air molecules are squeezed closely together

• Temperature is cool and dry

• Areas with high pressure have clear, sunny skies

Low Pressure System

• Air molecules are spaced out

• Temperature is warm and moist

• Areas with low pressure will be warm and rainy

Multiple Choice

Based on the weather map, which city will most likely experience decreasing temperatures during the next 24 hours?

• Denver, because it is raining there

• Minneapolis, because a cold front is approaching

• Atlanta, because a warm front is approaching

• Houston, because it is in a high temperature area

Multiple Choice

Which city is going to experience cool weather with sunny, clear skies?

• Minneapolis

• Billings

• Denver

• Washington D.C.

Theory of Plate Tectonics

The lithosphere is broken into Tectonic Plates

• The lithosphere is made from the crust and the uppermost part of the mantle

• The lithosphere is rigid, brittle rock

• These plates float on the asthenosphere

Pangea

• The super continent that Alfred Wegener described in his theory of Continental Drift

How do the plates ACTUALLY MOVE?

• Convection currents in the asthenosphere drive the movement of lithospheric plates

How does a convection cell occur?

• Hot magma in the asthenosphere begins to rise, similar to the way hot air rises.

• As it rises to the top of the asthenosphere, it cools and becomes more dense.

• This cooler, dense magma then sinks again. As it sinks, it gets warmer, until the process begins again

• This movement of magma is what drives the plates to move.

Multiple Choice

Tectonic plates consist of

• continental crust

• mesospheric crust

• both continental and oceanic crust

• oceanic crust

Multiple Choice

The idea that the continents were once part of a single landmass that broke apart and

moved is

• Continental Drift

• Tectonic Plates

• Transform

Multiple Choice

The region where two lithospheric plates meet

• Continental Drift

• Plate tectonics

• Plate Boundaries

Multiple Choice

The scientist who developed the big idea called "sea-floor spreading"

• Alfred Wedgener

• Harry Hess

• Edward Dutton

• Ortelius

Multiple Choice

Pangaea was an ancient supercontinent made up of...

• America, Greenland, and Europe

• Antarctica, India, and America

• all of Earth’s continents

• South Africa, India, Australia, and South America

Multiple Choice

Why did no one believe Wegener's thoery that the continents were once together?

• He could not explain HOW the continents moved

• He didn't have evidence

• His data was wrong

• He didn't use the right technology to gather data

Multiple Choice

The movement of the tectonic plates is caused by

• the rotation of the Earth

• convection currents in the Asthenosphere

• the gravity of the iron-nickel core

• the Moho discontinuity

Multiple Choice

Which layer of the Earth consists of tectonic plates?

• asthenosphere

• mantle

• mesosphere

• lithosphere

Multiple Choice

Tectonic plates “float” on

• the lithosphere

• the mantle

• the ocean

• the asthenosphere

Multiple Choice

The fact that similar fossils are found on both sides of the ocean is evidence of

• magnetic reversal

• global positioning

• continental drift

• oceanic drift

HR Diagrams

By Edge

HR Diagrams show temperature/color in relation to relative brightness.

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HR Diagrams

Most stars live in the main sequence for the majority of their lives. Our star is a yellow star within this main sequence.

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Main Sequence

Blue Giants are massive, fast burning stars that are the hottest and brightest in our universe. They use up their fuel quickly (relative to other stars).

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Blue Giants

Red Giants are massive, relatively cool stars. our star will become a red giant after the hydrogen is gone. Blue giants turn into red SUPERgiants at the end of their hydrogen.

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Red Giants

White dwarfs are small, white, very hot stars. Our star will become a white dwarf after the reg diant phase.

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White Dwarfs

The closer to the Y axis, the hotter the star. Thus, white dwarfs and blue giants are the hottest stars.

The further from the Y axis, the cooler the star. Red giants are large, but very cool.​

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Temperature

Brightness on the HR diagram increases the further you get from the X axis. Blue and red giants are the brightest stars mainly due to their size; not temperature!

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Brightness

Multiple Choice

Which quadrant has the hottest, dimmest stars?

• Quadrant 1

• Quadrant 2

• Quadrant 3

• Quadrant 4

Multiple Choice

What is the name of the stars located in quadrant 2?

• Main Sequence

• White Dwarfs

• Red Giants

• Blue Giants

Multiple Choice

Where would our sun be located?

• Quadrant 1

• Quadrant 2

• Quadrant 3

• Quadrant 4

Multiple Choice

Where would blue giants be found?

• Quadrant 1

• Quadrant 2

• Quadrant 3

• Quadrant 4

Multiple Choice

What section is considered the main sequence?

• Area M

• Area P

• Area X

• Area Z

Multiple Choice

Where are red giants?

• Area M

• Area P

• Area X

• Area Z

Multiple Choice

Where are white dwarfs?

• Area M

• Area P

• Area X

• Area Z

GREAT JOB!!!! Looks like you know your STAAR stars now!!!!

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