Matter & Energy
Heredity And Genetics
Energy Transformation
Random Science
Earth & Space
200
An electric model train accelerates at a rate of 8 m/s2 with 12 N of force. What is the mass of the train (and correct unit)?
1.5 kg
200
A trait that will NOT show up unless there are 2 alleles for it
A recessive gene
200
The energy transformation that takes place when you power a small fan using batteries
chemical --> Mechanical
200
5 pieces of evidence supporting the theory of continental drift
fossils, puzzle pieces, rock formations, coal deposits, glacier scars
200
A boy organized photos of stars in order from coolest to hottest. If there were yellow, orange, red, white, and blue stars, what would be the proper order?
red, orange, yellow, white, blue
400
Which is balanced?
A) 2CH4 + O2 -> CO2 + H2O
B) CH4 + 2O2 -> CO2 + 2H2O
C) CH4 + 2O2 -> CO2 + H2O
B
400
The benefits and drawbacks of asexual reproduction
benefit = easy to just clone
drawback = lack of variety means less sustainability
400
This energy transformation occurs when water in a tea kettle is heated on a stove that uses natural gas
Chemical--> Thermal
400
When do most hurricanes form in the Atlantic ocean, and why?
summer months because the water is warmer then
400
What is the life cycle of a massive star vs an average-sized star?
[Go thru each stage for massive vs regular]
600
What is the number 3 called, and what does it represent in 4NH3?
subscript; the # of hydrogens
600
When someone has brown eyes, why can you not immediately know what their genotype is?
phenotype is only the appearance, and 2 separate genotypes (Bb or BB) would appear brown
600
Energy transfer when burning a campfire
chemical to thermal & light
600
What are 2 ways you could double the acceleration of an object?
double the force or cut the mass in half
600
Which plate boundary and types of crust are needed for subduction to occur? AND, what landforms result?
convergent O+O or O+C; results in volcanic activity and trenches
800
X + 2O2 --> CO2 + 2H2O
What reactant (shown as "X") is missing from this chemical equation?
CH4
800
What is homozygous vs heterozygous?
similar vs different alleles is the genotype
800
This energy transformation occurs during photosynthesis
solar/radiant to chemical
800
Why is it more rainy/humid in Galveston vs San Antonio? Be specific.
near more warm water, which powers the water cycle (resulting in more evaporation and condensation, along with more storms)
800
Why do transform boundaries result in earthquakes? Be specific.
as plates slide/grind past each other, they get stuck; tension/pressure builds until they pop loose in sudden jolts
1000
During a chemical reaction, a student measured the mass of the reactants before combining them in an open glass beaker. After the reaction, he noticed that the mass of the product had decreased. Because this appears to go against the Law of Conservation of Mass, what is the most likely explanation for this observation?
Some of the products had escaped as a gas since the beaker was not sealed.
1000
The type of reproduction that is more likely to be successful in a changing environment due to VARIATION in offspring; more sustainable
Sexual Reproduction
1000
This energy transformation occurs when the power of a wind turbine spinning is used to power a small town
Mechanical energy ---> Electrical energy
1000
What is secondary succession and its stages, AND when is it most sustainable and WHY?
starts with soil; stages are grasses/weeds, shrubs/bushes, and trees;
most sustainable during climax community because it has the highest biodiversity
1000
What type of plate boundary is associated with the sea-floor spreading, and what landform results?
divergent underwater; mid-ocean ridge