Catalyst – March 23, 2010

Catalyst – March 23, 2010Monday Mystery

Element

1. Comes from the Greek “Lutetia,” meaning “Paris”

2. Usually found with Ytterbium

3. The most costly of all rare earths ($75/g)

GEEopardyScience As

InquiryPhysical Science

Life ScienceEarth and

Space Science

Environmental Science

Q $100

Q $200

Q $300

Q $400

Q $500

Q $100 Q $100Q $100 Q $100

Q $200 Q $200 Q $200 Q $200

Q $300 Q $300 Q $300 Q $300

Q $400 Q $400 Q $400 Q $400

Q $500 Q $500 Q $500 Q $500

Final Jeopardy

$100 Question: Science As Inquiry

Johanna wants to heat up a liquid in a test tube over a Bunsen Burner. Her

lab partner, Greg, is in charge of making sure they are safe in the lab. What are 3 things that Johanna and

Greg should do to be safe?

$100 Answer: Science As Inquiry

1)Wear goggles2)Point test tube away from all people

3)Tie long hair back4)Report any breaks/spills to teacher

5)Know where the fire extinguisher is


Drew Brees is known for being a horticulturist. He wants to test how much fertilizer is needed to help his

daisies grow as tall as possible. Idenitify the INDEPENDENT VARIABLE, DEPENDENT

VARIABLS and THREE CONSTANTS in this experiment.


IV: amount of fertilizerDV: height/growth of daisiesConstants: Amount of water, pot/flower bed, type of plant,

amount of sunlight, location in yard, how much Drew Brees pep

talks the plants


What metric unit would be the most appropriate for measuring the following?

Include unit and prefixes if necessary.a) Width of a human hair

b) Biomass of all trees in a forestc) Duration of an eye blink

d) Distance from here to Minnesotae) Mass of a penny


a) Millimeter OR Micrometerb) Kilogram OR Megagram

c) Millisecond OR Microsecond OR Nanosecond

d) Kilometere) Gram OR Centigram

$400 Question: Science As InquiryA) Predict how far a 2-kg soccer ball will travel if

kicked with 60 N of force? B) Explain your prediction. Trial Force Used to Kick Soccer

Ball

N = Newtons

Mass of Soccer Ball Kicked

kg = kilograms

Distance Soccer Ball Travels

m = meters

1 40 N 2 kg 60 m

2 50 N 2 kg 80 m

3 40 N 3 kg 40 m

4 50 N 3 kg 60 m

5 60 N 3 kg 80 m


A) A 2-kg soccer ball kicked with a force of 60 N will travel around 100 m.

B) According to the data table, the soccer ball travels further with greater force and less mass. Therefore,

a 2-kg ball kicked with 60 N of force will travel further than a 2-kg ball kicked with less force, and it

will travel further than a 3-kg ball. The distance also increases by 20 in Trials 1 and 2, so it should

continue to increase by 20 m.

$500 Question: Science As InquiryDescribe a flaw in the following conclusion:

If I kick a 4-kg soccer ball with a 40-N force, it should travel 70 m.

Trial Force Used to Kick Soccer Ball

N = Newtons

Mass of Soccer Ball Kicked

kg = kilograms

Distance Soccer Ball Travels

m = meters

1 40 N 2 kg 60 m

2 50 N 2 kg 80 m

3 40 N 3 kg 40 m

4 50 N 3 kg 60 m

5 60 N 3 kg 80 m


As mass increases, distance traveled decreases. Therefore, a 4-kg soccer ball kicked with a 40-N force should travel less than the balls with less mass.

$100 Question: Physical Science

What is the difference between distance and displacement?

$100 Answer: Physical Science

Distance is a scalar (tells how far you traveled)

Displacement is a vector (tells you how far you are from

your starting point)


A)Explain the Law of Conservation of Energy.

B)Apply this to the dropping of a ball.


A)Energy cannot be created or destroyed.

B)When the ball is at rest, it has potential energy. When the ball is

dropped, potential energy is converted to kinetic energy.


A student pushes a 60-kg crate across a frictionless floor with a force of 120 N. What is the acceleration of the crate?


Using equation F = ma120 N = (60 kg)(a)

a = 20 m/s2


What are the three types of heat transfer?


1) Conduction2) Convection3) RadiationHeat Transfer!


A)Describe what happens in a nuclear fission reaction.

B)Describe what happens in a nuclear fusion reaction.


A) In a nuclear fission reaction, the nucleus of an atom splits into smaller pieces, produces energy.

B) In a nuclear fusion, atomic nuclei join together to form a heavier nucleus. It is accompanied by the release or absorption of energy.

$100 Question: Life Science

What is the difference between prokaryotic and eukaryotic

cells?

$100 Answer: Life Science

Prokaryotic cells do not have nuclei or membrane-bound organelles. Eukaryotic do have nuclei and membrane-bound organelles.


Describe each of the following organelles:

A)MitochondriaB)Ribosome

C)Cell membraneD)Chloroplast


A)Mitochondria: makes energy (ATP) for the cell

B)Ribosomes: makes proteinsC)Cell membrane: controls what

goes in and out of the cellD)Chloroplast: only in plants, allows photosynthesis to occur


Widow’s peak (W) is dominant to straight hairline (w). If a

homozygous recessive mother mates with a heterozygous father, what is the chance that their kid

will have a widow’s peak? Draw a Punnett Square of this situation.


W

w

w w

WwWw

wwww

50% chance of widow’s

peak!


How is information in DNA used in the cell?


DNA contains genetic code. RNA is the copy of DNA. RNA travels to the ribosomes. Ribosomes read the RNA and make proteins.


Describe the process of natural selection.


Organisms will have mutations (changes in DNA). Therefore, there will be changes in these organisms. The organisms with the best mutations will survive and reproduce while the organisms with the bad mutations will die off.

$100 Question: Earth and Space Science

A) Put the rock layers in order from oldest to

youngest.B) If you found a fossil

in rock layer F and a fossil in rock layer A, which do you think would represent a

more evolved species?

$100 Answer: Earth and Space Science

Trap heat from the Sun (like a greenhouse!)


Why did the atmosphere become richer in oxygen around 4 billion years ago?


Organisms evolved the ability to photosynthesize, pumping

out oxygen into the atmosphere.


Halley’s Comet completes one orbit around the Sun about every 75 years. The orbit of the comet

is represented in the picture. Describe the gravity changes

experienced by the comet as it approaches, goes around, and

moves away from the Sun.


Gravity is highest when Halley’s Comet is close to the Sun. It is lowest

when the comet is furthest from the Sun.

Gravity is always affecting the comet’s

path.


Radiometric dating is a technique used to date materials, usually based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products. The half-life of Uranium-235 is 713 million years.

A) If a rock has 50% of its original U-235, how many half-lives have passed? How old is the rock?

B) If another rock has 25% of its original U-236, how many half-lives have passed? How old is this rock?


A)If 50% of U-235 is left, that means ONE half-life has passed and the rock is 713 million years old.

B)If 25% of U-235 is left, that means TWO half-lives have passed and the rock 14,260 million years old.


Describe the theory of plate tectonics.

$500 Answer: Environmental Science

The theory of plate tectonics explains the processes that constantly reshape the Earth’s surface. The lithosphere is broken up into tectonics plates. Movement of heat and matter in the core and mantle cause plates to slide, shift, and split.

$100 Question: Environmental Science

What do greenhouse gases, such as CO2, do in

the atmosphere?


Trap heat from the Sun (like a greenhouse!)


Identify three different

renewable sources of electricity


Hydropower, wind power, solar power


If an oil spill kills all the seals, what

would happen to the polar

bears?


The population of polar bears would decrease.


How come an ecosystem can support more rabbits than

wolves?


90% of energy is lost every time you go up a step in the food chain. A rabbit (primary consumer) gets only 10% of the energy from the grass. The wolf (who eats the rabbit) gets only 1% of the original energy. There is not enough energy to support large populations of wolves.


Suppose an oil tanker ran aground and broke apart near the mouth of the Mississippi River

and millions of gallons of crude oil spilled out of the ship. Describe two effects this

would likely have on the ecosystems in the surrounding environment.


• wildlife is affected—oil coats plants and animals and can kill them• upsets ecological balance, killing wildlife and plant life • years for areas to be restored • fishing and estuaries affected—fish kills, pollution • negative aesthetic effect on recreational areas

Final JeopardyIdentify one solution that will slow the rate of Earth and Space Science.

EXPLAIN WHY it will help the environment.

EXPLAIN HOW you can make it a part of your life.

Final Jeopardy Answer

Reducing biodiversity makes ecosystems less stable.

Cut down all the trees in the rainforest everything that needs those trees (for food, shelter, etc.) dies everything that needs those organisms dies everything dies

Date post:	02-Jan-2016
Category:	Documents
Upload:	liberty-clemons
View:	29 times
Download:	2 times

Catalyst – March 23, 2010

Documents