A
If there were suddenly an increase in the number of plants, what would happen to the amount of Carbon Dioxide in the air and to global warming?
More plants would lead to less carbon dioxide because they use it for photosynthesis. Less carbon dioxide would mean reduced global warming.
Name 3 energy sources that don't pollute the air.
1 must be non-renewable and 2 are renewable
NR-Nuclear
R-solar, wind
If an animal uses another animal as its food source, this type of relationship is called ________________.
predator-prey
parasitic
mutualistic
commensalistic
Parasitic
Which number set varies the least?
A--1,5,10
B--1,24,87
A--1,5,10
Varies the least because the numbers are closer together than 1,24,87
The disadvantages of hydropower are __________buildup which causes a decrease in the amount of river ecosystems.
Sediment
Even though we know that renewable resources are cleaner, the majority of electricity is still produced from what?
Fossil Fuels
Sodium chloride is formed when sodium and chlorine have a chemical reaction and bond together. Therefore, sodium chloride can be called a ______________.
element, mixture, compound, atom
Compound
Earth has 3 spheres.
Atmosphere means____________
Biosphere means______________
Geosphere means_____________
Biosphere means living and non living things.
Geosphere means Earth/soil.
If an animal disappears from a food chain, there will be less ______________for animals (above) who eat that animal and the population of animals (below) eaten by that animal will ____________.
competition
increase
Group (vertical)
Period (horizontal)
Group (vertical)
What does differentiate mean?
Tell the difference between
Using a microscope, if a substance is a pure substance, it will look the __________no matter what section you look at.
Same
The Industrial Revolution in 1750 caused many ____________to be cut down which reduced the forests' ability to take _________ ___________ out of the air.
trees
carbon dioxide
Magma
In digestion, stomach acid turning food into nutrients is a ________change.
Physical
Chemical
Chemical
Reason: Creates new substance
If a resource is limited or endless and can be reused or recycled, it is what type of resource? Renewable or non-renewable?
Renewable
Which type of relationship between animals means that they both benefit from their relationship?
Parasitism, mutualism, competition, commensalism
Mutualism
Biotic factors are factors that are ___________.
Protozoans are biotic factors.
Living or were once living
When fossil fuels are burned, there is less of the element _________being stored in the ground and more of the element ________in the atmosphere. (think carbon cycle)
Carbon
Carbon
Heat is released when wood burns because burning releases _________energy stored in ___________bonds.
Heat
Chemical
Reducing the amount of sulfer dioxide a factory pumps into the air, helps to reduce what coming down from the clouds?
Acid Rain
In a closed chemical reaction, the mass of the products will equal the mass of the _____________.
Reactants
C6H10O5 + 6O2+heat ---yields-->6CO2+ 5H2O
Draw the reactants!
Oxygen is black circle
Carbon is empty triangle
Hydrogen is empty circle
See Mr. Lowek's Drawing
The reactants are:
C6H10O5 + 6O2+heat
If an equation looks like this
2A3+2B2---->A6B4
We know that a _________change occured because there a new substance was made called A6B4 .
Chemical change
2A3+2B2---->A6B4
Reason: Elements are bonded differently on the right side
A bottle that was broken into many small pieces is an example of what type of change?
Physical
Chemical
Physical---no new substance formed