6. What is the formula that relates wave speed, frequency, and wavelength?
Speed= Frequency - Wavelength
Speed= Frequency x Wavelength
Speed= Frequency + Wavelength
Speed= Frequency / Wavelength
7. Name the two types of seismic waves caused by earthquakes, and state whether each type is a transverse or longitudinal wave.
P-Waves and S-Waves and they both transverse.
P-Waves and S-Waves and they are both longitudinal.
P-Waves= longitudinal, and S-Waves=transverse.
P-Waves= transverse, and S-Waves= longitudinal.
8. What type of seismic wave cannot pass through liquids?
S-Waves.
Neither.
P-Waves.
Both.
9. What causes tectonic plates to drift?
Lava.
Convection currents.
Magma.
Ocean waves.
10. Where do most earthquakes and volcanoes occur?
Plate ridges.
Near the edges of the plates.
Near the middle of the plates.
Away from the plates.
11. Roughly how many stars make up the milky way?
Thousand of trillions.
Hundreds of millions.
Thousands of millions.
Hundreds of trillions
12. Name the process that wears mountains down.
Erosion.
Compilation.
Transportation.
Abrasion.
13. How fast are some sea floors spreading each year?
By a few FEET per year.
By a few MILOMETERS per year.
By a few CENTIMETERS per year.
By a few INCHES per year.
14. Other than planets, name three things that orbit the sun.
Dwarf planets, comets, and dust.
Mercury, Venus, and Earth.
Dust, Earth, and comets.
The sun, the Earth and the stars.
15. Briefly explain Wegener's theory of continental drift.
About 300 million years ago there had been ONE continent (Pangaea) and over time it broke up into smaller chunks and spread out.
About 300 million years ago there had been ONE continent (Panantas) and over time it melted into the ocean and created other islands.
About 250 million years ago there had been TWO continents (Pangaea and Samantes) and over time it's spread out.
About 1 million years ago there had been ONE continent (Pangaea) and one day it combusted and broke off into mini islands.
16. What is red shift?
When a galaxy is moving away from us and the wavelength of the light from it changes, this causes the light to become redder.
Red shift is when distant planets move towards us, the wavelengths change and give off a red glow.
When planets are moving away from us a high speeds, scientists use the term 'red shift' to explain at what rate it's moving away.
Wavelengths change and appear to turn any light source a red type color.
17. Give three reasons why Wegener's theory was rejected at first.
His theory couldn't explain things that the 'land bridge' theory could, his explanation of how the 'drifting' happened wasn't convincing, and he was a geologist.
His theory couldn't explain things that the 'land bridge' theory could, his explanation of how the 'drifting' happened wasn't convincing, and he was a meteorologist (not a geologist).
His theory couldn't explain things that the 'land bridge' theory could, his explanation of how the 'drifting' happened was convincing, and he wasn't a geologist.
His theory could explain things that the 'land bridge' theory could, his explanation of how the 'drifting' happened wasn't convincing, and he wasn't a geologist.
18. Explain why we see stars and galaxies as they were in the past.
We don't, it a common misconception in science. What we are seeing is the same time.
Light travels at a certain speed, so the further away something is in space, the longer the light takes to get to us.
Space time and Earth time are different. One earth year=100 space years.
The planet move so fast that it's hard for the light to keep up.
19. Briefly explain the changes you see in the magnetic orientation of sea floor rocks.
When the Earths magnetic orientation changes the alignment of the rocks change with it.
When the Earths magnetic orientation changes the movement of the rocks change as well.
When the Earths magnetic orientation changes the shape of the rocks become distorted.
When the Earths magnetic orientation changes the color of the rocks change with it.
20. Explain the evidence that shows that the universe is expanding.
Purple haze can be seen, and we know that purple haze occurs when objects in space are moving away.
Blue shift can be seen, and we know that blue shift occurs when objects in space are moving away.
Red shift can be seen, and we know that red shift occurs when objects in space are moving away.
Yellow shift can be seen, and we know that yellow shift occurs when objects in space are moving away.
