March 19, 2013
Monday's Question of the Day
Remember...
• Kinetic energy is the energy of motion
• Potential energy is stored (think... it has the potential to move,
but it isn't currently)
In this diagram, which position does the roller coaster car have...
a. minimum gravitational potential energy (and maximum kinetic
energy)?
b. maximum gravitational potential energy (and minimum kinetic
energy)?
c. Are kinetic & potential energy directly or inversely related?
March 19, 2013
Monday's Question of the Day
Remember...
• Kinetic energy is the energy of motion
• Potential energy is stored (think... it has the potential to move,
but it isn't currently)
In this diagram, which position does the roller coaster car have...
a. minimum gravitational potential energy and maximum kinetic
energy? Answer = F
b. maximum gravitational potential energy and minimum kinetic
energy? Answer = A
c. Are kinetic & potential energy directly or inversely related?
Answer = Inversely (when one goes up the other goes down)
March 19, 2013
Density - the measure of an object's mass
dependent on the volume it occupies
You are given a mystery object in science class. Your teacher asks you to
determine if your object is more or less dense than water. You place the
object in the water and it sinks. What statement would best describe this
situation?
A. The mystery substance is denser than water.
B. Water is denser than the mystery substance.
C. They both have the same mass.
D. The mystery substance must be hollow.
You have two plastic vials. One contains 40ml of
water and the other contains 40ml of alcohol.
Which statement is correct?
A. Both vials have the same density.
B. Both vials have the same volume.
C. Both vials have the same mass.
D. All of the above.
March 19, 2013
Density - the measure of an objects mass
dependent on the volume it occupies
You are given a mystery object in science class. Your teacher asks
you to determine if your object is more or less dense than water.
You place the object in the water and it sinks. What staement
would best describe this situation?
A. The mystery substance is denser than water.
B. Water is denser than the mystery substance.
C. They both have the same mass.
D. The mystery substance must be hollow.
You have two plastic vials. One contains 40ml of water and the other contains
40ml of alcohol. Which statement is correct?
A. Both vials have the same denisty.
B. Both vials have the same volume.
C. Both vials have the same mass.
D. All of the above.
March 19, 2013
Symbiotic Relationships - how organisms interact
Mutualism - both organisms benefit from the
relationship.
Commensalism - one organism benefits and the other
isn’t affected.
Parasitism - one organism benefits & another is
harmed.
Predation - think: predator/prey; one organism chases
and catches another
March 19, 2013
1. Which interaction between organisms would be described as
parasitic?
a. A mosquito feeding on the blood of a dog
b. A bee gathering nectar and pollen from a flower
c. A cleaner shrimp picking deadskin off a large fish
d A nonpoisonous snake mimicking a poisonous snake
2. Termites eat wood but cannot digest it. Protozoans live in
the termite's stomachs and use enzymes to break down the
wood. The digested wood provides nutrition for both the
termites and the protozoans. What type of relationship is this?
a.
b.
c.
d.
Mutualism
Parasitism
Predation
Commensalism
March 19, 2013
1. Which interaction between organisms would be described as
parasitic?
a. A mosquito feeding on the blood of a dog
b. A bee gathering nectar and pollen from a flower
c. A cleaner shrimp picking deadskin off a large fish
d A nonpoisonous snake mimicking a poisonous snake
2. Termites eat wood but cannot digest it. Protozoans live in
the termite's stomachs and use enzymes to break down the
wood. The digested wood provides nutrition for bot the
termites and the protozoans. What type of relationship is this?
a.
b.
c.
d.
Mutualism
Parasitism
Predation
Commensalism
March 19, 2013
Convergent (plates collide) creates subduction
zones (trenches), tall mountains, volcanoes,
earthquakes – crust is destroyed
Divergent (plates pull apart) creates sea-floor
spreading, ridges, rifts, small mountains, small
volcanoes, earthquakes – crust is created
Transform (plates slide past) creates
earthquakes
March 19, 2013
A line of volcanoes occurs
along the western coast of
South America, near
location 4.
1. Based on the information about plate movement on the map,
which process helps explain the formation of these mountains.
a. Subducting of one plate under the other causes melting of
the lower plate.
b. Sliding of one plate sideways past another results in friction
and melting
c. melting of crust because of plate movement over a hot spot
d. rifting of a plate with lava filling the resulting valley
March 19, 2013
A line of volcanoes occurs
along the western coast of
South America, near
location 4.
1. Based on the information about plate movement on the map,
which process helps explain the formation of these mountains.
a. Subducting of one plate under the other causes melting of
the lower plate.
b. Sliding of one plate sideways past another results in friction
and melting
c. melting of crust because of plate movement over a hot spot
d. rifting of a plate with lava filling the resulting valley
March 19, 2013
2. Which process is forming high non volcanic mountain at location 1 on the
map?
a. One tectonic plate is splitting apart into two plate
b. Two tectonic plates are colliding and pushing together.
c. One tectonic plate is sliding past another tectonic plate
d. Two tectonic plates are colliding and one is sliding under the other.
March 19, 2013
2. Which process is forming high non volcanic mountain at location 1 on the
map?
a. One tectonic plate is splitting apart into two plate
b. Two tectonic plates are colliding and pushing together.
c. One tectonic plate is sliding past another tectonic plate
d. Two tectonic plates are colliding and one is sliding under the other.
March 19, 2013
Full Moon
Umbra
Sun
Earth
Lunar Eclipse
Penumbra
New Moon
Sun
Penumbra
Earth
Solar Eclipse
Umbra
March 19, 2013
At which two positions of the moon is an
eclipse possible?
A.
B.
C.
D.
A solar eclipse is most likely to occur when the
A. sun is located between the earth and moon
B. moon is located between the sun and the earth
C. earth is located between the sun and the moon
D. earth and moon are at right angles to each other
1 and 5
2 and 6
3 and 7
1 and 6
March 19, 2013
At which two positions of the moon is an
eclipse possible?
A.
B.
C.
4.
A solar eclipse is most likely to occur when the
A. sun is located between the earth and moon
B. moon is located between the sun and the earth
C. earth is located between the sun and the moon
D. earth and moon are at right angles to each other
1 and 5
2 and 6
3 and 7
1 and 6
March 19, 2013
Friday's Question of the Day!
Distance vs. Time Graphs
Distance is plotted on the y-axis; time across the x-axis.
• The slope of the line indicates the speed
(steeper = faster).
• A flat, horizontal line = no motion (position/
distance isn't changing as time passes).
• Positive slope (angled "up") = moving away
from reference point;
• Negative slope (angled "down") = moving
towards the reference point.
• Curved line = changing speed (slowing down
or speeding up, depending on whether the
beginning or the end of the line is flatter).
March 19, 2013
Match the graph (letter) with the motion that is displays (number).
A
B
1. No motion
2. Acceleration away from
reference point
C
D
3. Steady speed away from
reference point
4. Steady speed toward
reference point
5. In the graph to the right, please
identify which object is traveling at a
faster speed.
= Car A
= Car B
March 19, 2013
Match the graph (letter) with the motion that is displays (number).
A=3
B=4
1. No motion
2. Acceleration away from
reference point
C=2
D=1
3. Steady speed away from
reference point
4. Steady speed toward
reference point
5. In the graph to the right, please
identify which object is traveling at a
faster speed.
= Car A
= Car B
Car A is moving faster. It is covering the
same distance as Car B in less time.