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28 Cards in this Set
- Front
- Back
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Scientific method
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• Statement of the problem
• Gathering information on the problem • Forming a hypothesis • Performing experiments to test hypothesis • Recording and analyzing data • Stating a conclusion • Repeating the work |
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mass
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• Grams
• kilogrmas |
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volume
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• Milliliters
• liters |
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density=
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mass/volume
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length
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•milliliters
•centimeters •meters •kilometers |
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temperature
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degrees celsius
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water boils (°C)
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100°C
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water boils (°C)
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0°C
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1 calorie =
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1mL of water raised 1°C
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tundra
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•very low temperature
•percip is less than 25cm per year •soil has few nutrients & thin acidic |
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taiga
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•low temp
•short summers, long cold winter •percip less than 35-100 per year •soil has few nutrients & thin acidic |
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grasslands
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•moderate temp
•hot summer, cold winter •percip less than 25-100 per year •soil is rich in humus, deep top soil |
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desert
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•temperature is variable (temperate or tropical)
•daily temp can be greater than seasonal •percip less than 25 cm per year •sandy soil |
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deciduous forest
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•-30 to 30 degrees celcius
•distinct seasons •percipitation 75-150 cm per year •rich soil w/ medium nutrient level |
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rain forest
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•temperature is hot
•daily temp can be better than seasonal •pecip more than 200 cm per year, thin soils, few nutrients |
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sun
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provides energy for everything on the planet
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producers
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•all green plants
•producers are able to harness the energy of the sun to make food •every organism depends on plants for oxygen & food •producers make up bulk of food chain |
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consumers
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organisms that eat something else
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herbivores
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animals that eat plants
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carnivores
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animals that eat other animals
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parasites
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animals that live off of other organisms by harming it
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scavengers
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animals that eat dead animal carcasses
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decomposers
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•bacteria convert dead matter into gass which is released into air, soil, and water
•earth would be covered in waste if not for decomposers •nutrients are then recycled |
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exponential growth
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(j-curve) growth at which a constant rate of increase occurs per unit time
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population growth
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growth rate for closed system=r-birthrate-deathrate
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logistic growth
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(s-shaped curve)
•growth rates regulated by internal and external factors until they come into equilibrium with enviormental resources •growth rate slows as population approaches carrying capacity |
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enviormental resistance/limiting factors
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any enviormental factor that reduces population growth
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biotic potential
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maximum reproductive rate an organism
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