If an object has two forces acting on it, how can the net force equal 0?
The forces acting on the object must be the same amount, in opposite directions.
Gravity
Where do volcanoes and earthquakes mostly take place?
At plate boundaries
Law that states older fossils are found on bottom layers and younger fossils are found in the upper layers.
Law of superposition
What type of rock is commonly found near volcanoes?
Igneous
What is Newton's 1st, 2nd, and 3rd Law?
1st Law: An object at rest will stay at rest and an object in motion will stay in motion unless acted on by an unbalanced force.
2nd Law: F=MxA
3rd Law: For every action, there is an equal and opposite reaction.
What are the 4 types of wave behaviors? Draw a model of each on the white board.
1. Reflection
2. Refraction
3. Transmission
4. Absorption
What is the difference between compositional layers and mechanical layers?
Compositional layers are based on chemical composition while mechanical layers are based on physical properties and how they behave.
When humans intervene and choose what traits they want in an organism.
Artificial selection or selective breeding.
When an object in space appears to be shifted towards the red, that object is moving in what direction from the observer?
Away
How can you increase the strength of an electromagnet (3 ways)?
1. Larger battery
2. More coils
3. Larger Iron Core
On the white board, draw a model of a transverse wave. Label the crest, trough, wavelength, and amplitude.
Crest: high point
Trough: low point
Wavelength: crest to crest or trough to trough
Amplitude: resting position to crest or resting position to trough
What are the 3 plate boundaries? Draw a model of each on the white board.
1. Convergent: Collide
2. Divergent: Divide
3. Transform: Slide
Which is the only organism that has the ability to purr?
Domestic Cat
If a seismograph doesn't record an S-wave (secondary), what is the best explanation?
The S-wave couldn't travel through the liquid outer core to reach the seismograph.
How do you increase the strength of a generator (up to 3)?
1. Add more coils
2. Larger permanent magnet
3. Increase movement
List the Electromagnetic Spectrum Waves from highest energy to lowest energy.
Gamma, X-Ray, Ultraviolet, Visible Light, Infrared, Microwave, Radio
What process forms sedimentary rock?
What process forms igneous rock?
What process forms metamorphic rock?
1. Cementing and compacting of sediment
2. Cooling and hardening of magma
3. Heat and pressure
Finches developing different types of beaks on the Galapagos island chain is an example of what?
Natural Selection
Name what type of wave (mechanical or Electromagnetic) each example is.
1. Seismic wave
2. Sound wave
3. Radio Wave
1. Mechanical
2. Mechanical
3. Electromagnetic
How can you increase the strength of an electric motor?
1. More coils in the armature
2. Larger battery (more current)
3. Larger permanent magnet
On the white board, illustrate a spring tide and neap tide.
1. Spring Tide: the moon, sun, and Earth are in a straight line
2. Neap time: the moon, sun, and Earth are at a right angle
What is sea floor spreading? At which boundary does it take place at?
Sea floor spreading is the process where new sea floor is created. It takes place at a divergent boundary.
Term for when structures between organisms are similar indicating they have common ancestry (usually the purpose of the structure is not the same; example: bat wing and whale fin.)
Homologous structure
When a wave refracts, why does it bend when it enters a new medium?
Because the wave speeds up/slows down when it enters the new medium, causing it to bend.
A generator changes __________ energy into ___________ energy.
An electric motor changes _________ energy into ___________ energy.
A generator changes mechanical energy into electrical energy.
An electric motor changes electrical energy into mechanical energy.
What are the 2 pieces of evidence that the universe is expanding?
1. composition of stars (hydrogen and helium)
2. motion of galaxies (redshift)
What are the 3 pieces of evidence for plate tectonic movement?
1. distrubution of fossils
2. continental and oceanic features (mountains, volcanos, etc)
3. the occurence of earthquakes
What is the name of the extinction event that caused the extinction of the most species in Earth's history, also known as the "great dying".
Permian
1. What type of plate boundary does an ocean trench exist at
2. Specifically between what two types of crust?
1. Convergent (subduction zone)
2. Oceanic and Continental