Earth's Layers
What three factors determine to properties of Earth's layers?
1. Elements
2. Temperature
3. Pressure
Name the four different types of waves.
S-Waves
P-Waves
Love Waves
Rayleigh Waves
Is magnetic north located above or below the equator?
Below
What poles attract?
North and South
What is the volume of a rectangle if the length is 3 cm, the width is 5 cm and the height is 2 cm?
30 cm3
V= length x width x height
Name the three layers of the Earth based on CHEMICAL Composition.
Mantle
Crust
What is the difference between S-Waves and P-Waves?
S-Waves are TRANSVERSE waves, meaning they move up and down.
P-Waves are are LONGITUDINAL waves, meaning they have a "push and pull" movement.
What is needed to create a magnetic field?
An electric current (a.k.a - movement of electrons)
What poles repel?
North and North OR South and South
What is the mass of a lead ball if the density is 5 g/mL and its volume is 4 mL?
20 gram
mass = density * volume
Name the five layers of the Earth based on PHYSICAL Composition
Lithosphere
Asthenosphere
Mesosphere
Outer Core
Inner Core
Where do Rayleigh waves travel and what type of motion do they have?
On the surface or the crust, rolling motion
What is the Dynamo Theory?
States that the Earth's magnetic field is caused by convection happening in the outer core
The magnetic field will always come out from which pole?
North
A baseball with the mass of 145 grams is hit at 31 m/s to the southeast. What is the speed and velocity of the baseball?
The speed of the baseball is 31 m/s
The velocity of the baseball in 31 m/s southeast
What is the MOST dense region of the Earth's interior?
Core
What type of motion do Love waves have?
Love waves are not only TRANSVERSE but they also move from side to side as well.
What causes the Earth's magnetic field?
Convection in the Outer Core
Name three types of magnetism.
1. Ferromagnetism
2. Paramagnetism
3. Diamagnetism
What is the volume of a wooden block that has the mass of 30 grams and a density of 6 g/cm3?
5 cm3
Volume = mass/density
Which layer of the Earth is made of up granite and basalt?
Crust
Define the following:
1. Wavelength
2. Frequency
3. Velocity
Wavelength is the measurement in meters of one full cycle (from crest to crest OR trough to trough)
Frequency is the number of cycles that happens in a second.
Velocity is the speed AND direction the waves are traveling
Explain the three types of magnetic field generation.
2. Electrons going around a nucleus in SYMMETRICAL pathways.
3. Electrons move in a conductor (like a wire) when they are pushed or pulled.
Name the only three elements that can be magnetized.
1.Iron
2.Cobalt
3. Nickel
A baseball with the mass of .145 kilograms is hit at 31 m/s to the southeast. What is the momentum of the baseball?
4.495 kg*m/s
momentum = mass * velocity
(p= mv)