# Geophysics/Quiz

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These striations in Costa Rica on Cerro Chirripo suggest a past glacier. Credit: Poutine.

Geophysics is an lecture from the school of geology and physics department.

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## Quiz

 Point added for a correct answer: Points for an incorrect answer: Ignore the questions' coefficients:

1

Which of the following are involved in the weak force?

 a core which emits neutrinos Fermi's β-decay theory 26Al undetectable with balloon-borne detectors Gamow-Teller interactions steady enough emission to be used as a standard for X-ray emission observed with delta-rays in 1731 M. Fierz

2

True or False, The force of gravity is a major force on the surface of the Earth.

 TRUE FALSE

3

If energy is the impetus behind all motion and activity, which of the following are associated with power?

 a launch location a rate of change of the impetus with time photon density an acceleration of the impetus neutrinos dynamically dominating baryons a rate of change of mass

4

For standard basis, or unit, vectors (i, j, k) and vector components of a (ax, ay, az), what are the right ascension, declination, and value of a?

 if the x-axis is the longitude of the Greenwich meridian, and ax equals ay, then RA equals 6h if the x-axis is the longitude of the Greenwich meridian, and ax equals ay, then RA equals 3h the value of a is given by ${\displaystyle a={\sqrt {a_{x}^{2}+a_{y}^{2}+a_{z}^{2}}}}$ if ax equals ay equals az, then the declination is -45° if ax equals ay equals az, then the declination is +45°

5

Complete the text:

 Match up the form or type of quartz with the effect: alpha quartz - A coesite - B cristobalite - C stishovite - D seifertite - E tridymite - F 10 GPa and above 1200°C . 2-3 gigapascals and 700°C . 22-460°C tabular crystals . trigonal tectosilicate . 35 GPa to 40 GPa orthorhombic 1470°C cubic or tetragonal form .

6

Complete the text:

 A composite spectrum is approximately a law over at least the ≈ 5 decade wavenumber range 10-13 m-1 < wavenumber < 10-8 m-1 and that may extend to wavenumbers.

7

True or False, A calculation of energy is not possible unless a mass is involved.

 TRUE FALSE

8

When the Earth is viewed from space using X-ray astronomy what characteristic is readily observed?

 the magnetic north pole the Hudson Bay meteorite crater the South Atlantic Anomaly the Bermuda Triangle solar positron events electrons striking the ionosphere

9

True or False, A unit vector is a direction with a magnitude of one.

 TRUE FALSE

10

True or False, Electrons in the Earth's magnetosphere are energized by neutral particles from the Sun.

 TRUE FALSE

11

Radiation phenomena associated with craters include?

 catena secondary craters checking equations about complex systems deformed strata electric arcs explosions

12

True or False, Solitary electrons constitute much of the remaining 1 % of cosmic rays.

 TRUE FALSE

13

Which of the following is not a radiation phenomenon associated with a crater?

 strata elongated dust particles high albedo olivine Rayleighs volcanoes

14

Moldavite is a mineral that may be associated with what radiation astronomy phenomenon?

 predicting the end of the Earth determining the accuracy of local computers meteorite impacts demonstrating that Venus was once a comet predicting when currently dormant volcanoes will erupt fireballs

15

True or False, Van Allen radiation belt electrons are constantly removed by collisions with atmospheric neutrals, losses to the magnetopause, and outward radial diffusion.

 TRUE FALSE

16

Which geophysical phenomena are associated with Earth?

 lava-spewing volcanoes sulfur volcanoes plate tectonics bombs liquid methane oceans magnetic field

17

Yes or No, Electron density applied to free radicals is spin density.

 Yes No

18

Which of the following are associated with electromagnetics?

 angular momentum transfer solar wind protons electrons the baryon neutrino charge neutralization

19

True or False, An electron reflectometer (ER) determines the location and strength of magnetic fields from the energy spectrum and direction of electrons.

 TRUE FALSE

20

Which geophysical phenomena are associated with Earth?

 weathering lightning calcium carbonate deposition in the oceans neutrons from the decay chain of uranium liquid methane oceans shocked quartz

21

What negatively charged particles may be used as tracers of cosmic magnetic fields?