Geophysics
1g = - correct answer9.8 m/s ^ 2
apogee - correct answerthe point in an orbit most distant from the body being orbited;
the highest point
-251, 655 miles or 405,000 km from the Earth results in a Micromoon
Chicxulub Crater - correct answer-Yucatán Peninsula, Mexico
-180 km diameter
-dated to 66 Ma
-discovered in 1992
Conduction - correct answerForm of heat transfer where heat energy is directly
transferred between molecules through molecular collisions or direct contact.
-increased energy level
-no net movement of material
Convection - correct answerThe transfer of heat by the movement of a fluid
-fluid expansion on heating causing density reduction
-at cool surface fluid loses heat, contracts, becomes more dense and sinks
De Magnete - correct answer(Gilbert, 1600)
-earth described as a bar magnet
-laws of attraction and repulsion
-earth rotates on axis
-earth revolves around sun
Does light travel faster in air or water? - correct answerair
Earth as a dynamo? - correct answer-electrical currents by motion of fluid outer core
(still not understood and very controversial)
Following elastic moduli relationships what happens to s-wave velocity as rigidity
increase? - correct answerthe stronger/more resistant to shearing a material is,
displaying a higher shear strength, the greater the s-wave velocity will be....IF all the
other factors remain constant
-important to note that density is part of any equation relating to wave velocity, rigidity
and incompressibility
For a constant torque.... - correct answera small moment of inertia will result in a rapid
rate of rotation
-mass distributed to the outside of the object has a greater moment of inertia and
rorates slower
, From Newton's Laws the gravitational acceleration on a mass (m2) can be equal to the
mass of attracting object (m1) over the..... - correct answersquared distance between
the centre of two masses
Galileo Galilei equations - correct answer-d (travepath) is proportional to time^2
- t = 2. pie . square root (k/g)
gravity - correct answerA force of attraction between objects that is due to their masses.
-it is a mutually attractive force
-earth is continually trying to lower .. and fall closer to the sun?
gravity anomalies over sink holes - correct answer
Gravity on Jupiter - correct answer-jupiter is the largest and most massive planet in the
solar system
-but as a gas giant Jupiter is less dense than terrestrial planets
-gas giant does not have a true surface gravity (defined as the force of gravity at its
cloud tops)
Gravity on Mars - correct answeris *38%* of Earth's gravity
-linked to how Mars is small in size (smaller radius)
-but density means Mars has 0.38 times the gravity of Earth
Gravity on Mercury - correct answermass/radius^2 = 0.38 times the size of Earth so...
-Mercury is the smallest and least massive planet in the solar system
-but Mercury has a high density meaning Mercy has a higher surface gravity
Gravity on Saturn - correct answer-saturn is a gas giant which is larger and more
massive than earth but less dense
Gravity on the Moon - correct answer-moon is special because humans can test out the
affects of diminished gravity
-surface graivty on the moon is 1.62 m/s^2
Gravity on Venus - correct answer-venus is similar to Earth and is referred to as 'Earth's
twin'
-Venus is equivalent in size to Earth and 0.915 times as massive and 0.95 times as
dense
Gravity variations around the earth (look at a level?)
-drawn picture! - correct answerAt ridges:
-higher density
At mountains:
-lower desnity
Heat flow variations around earth?
1g = - correct answer9.8 m/s ^ 2
apogee - correct answerthe point in an orbit most distant from the body being orbited;
the highest point
-251, 655 miles or 405,000 km from the Earth results in a Micromoon
Chicxulub Crater - correct answer-Yucatán Peninsula, Mexico
-180 km diameter
-dated to 66 Ma
-discovered in 1992
Conduction - correct answerForm of heat transfer where heat energy is directly
transferred between molecules through molecular collisions or direct contact.
-increased energy level
-no net movement of material
Convection - correct answerThe transfer of heat by the movement of a fluid
-fluid expansion on heating causing density reduction
-at cool surface fluid loses heat, contracts, becomes more dense and sinks
De Magnete - correct answer(Gilbert, 1600)
-earth described as a bar magnet
-laws of attraction and repulsion
-earth rotates on axis
-earth revolves around sun
Does light travel faster in air or water? - correct answerair
Earth as a dynamo? - correct answer-electrical currents by motion of fluid outer core
(still not understood and very controversial)
Following elastic moduli relationships what happens to s-wave velocity as rigidity
increase? - correct answerthe stronger/more resistant to shearing a material is,
displaying a higher shear strength, the greater the s-wave velocity will be....IF all the
other factors remain constant
-important to note that density is part of any equation relating to wave velocity, rigidity
and incompressibility
For a constant torque.... - correct answera small moment of inertia will result in a rapid
rate of rotation
-mass distributed to the outside of the object has a greater moment of inertia and
rorates slower
, From Newton's Laws the gravitational acceleration on a mass (m2) can be equal to the
mass of attracting object (m1) over the..... - correct answersquared distance between
the centre of two masses
Galileo Galilei equations - correct answer-d (travepath) is proportional to time^2
- t = 2. pie . square root (k/g)
gravity - correct answerA force of attraction between objects that is due to their masses.
-it is a mutually attractive force
-earth is continually trying to lower .. and fall closer to the sun?
gravity anomalies over sink holes - correct answer
Gravity on Jupiter - correct answer-jupiter is the largest and most massive planet in the
solar system
-but as a gas giant Jupiter is less dense than terrestrial planets
-gas giant does not have a true surface gravity (defined as the force of gravity at its
cloud tops)
Gravity on Mars - correct answeris *38%* of Earth's gravity
-linked to how Mars is small in size (smaller radius)
-but density means Mars has 0.38 times the gravity of Earth
Gravity on Mercury - correct answermass/radius^2 = 0.38 times the size of Earth so...
-Mercury is the smallest and least massive planet in the solar system
-but Mercury has a high density meaning Mercy has a higher surface gravity
Gravity on Saturn - correct answer-saturn is a gas giant which is larger and more
massive than earth but less dense
Gravity on the Moon - correct answer-moon is special because humans can test out the
affects of diminished gravity
-surface graivty on the moon is 1.62 m/s^2
Gravity on Venus - correct answer-venus is similar to Earth and is referred to as 'Earth's
twin'
-Venus is equivalent in size to Earth and 0.915 times as massive and 0.95 times as
dense
Gravity variations around the earth (look at a level?)
-drawn picture! - correct answerAt ridges:
-higher density
At mountains:
-lower desnity
Heat flow variations around earth?
