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WorksheetsOpenSciEd 7.5
Total questions: 25
Worksheet time: 25mins
The arrows in a food chain or web represent ...
They point to the organism that is being eaten.
It shows how sunlight flows within an ecosystem.
They show the direction the energy is flowing between organisms.
They represent how water is transferred within a habitat.
Why is some energy not passed on to the next trophic level?
The organisms at each level use about 90% of the available energy to live.
The statement is NOT true. All energy IS passed from one trophic level to the next.
The organisms at each level use about 10% of the available energy to live.
Most energy is absorbed by the soil instead.
The diagram represents a pyramid of energy in an ecosystem. Which level would most likely contain organisms that can photosynthesize?
A
B
C
D
Which organism(s) in the food web above can be described as quaternary consumers?
owl and mosquito
mouse only
small bird and owl
owl only
If the small bird on trophic level 3 in the pyramid has 50 kcal of energy available, how many kcal of energy were present in the trees?
5
500
5000
0.5
What is indicated by the diagram?
Food web
Food chain
Food map
Food menu
What is the first source of energy for almost all food webs?
Plants
Sunlight
Mineral in the soil
Decomposers
Which organisms in the diagram have the most energy to give to other organisms?
Cattails and Marsh Grass
Hawks and Snakes
Crickets and Grasshoppers
Shrews and Frogs
If additional snakes are introduced into this ecosystem, there will most likely be an immediate decrease in the _________.
hawk population
rabbit population
wildflower population
grass population
If there are 47,802 calories (energy) available at the producer level of this food chain, how many calories would be available at the tertiary consumer level?
47.802
478.02
4.7802
0
All energy in an ecosystem comes from the sun. This energy is passed through the ecosystem as organisms eat other organsims.
Ominvores
Herbivores
Detritivores
Flow of energy
Organisms that produce their own food mostly through photosynthesis (producers). Examples are plants and algae.
Ominvore
Detritivore
Heterotroph
Autotroph
Heterotrophs that get energy and nutrition from dead or decaying organisms or their waste products and recycle nutrients back to the ecosystem.
Producer
Trophic
Decomposer
Autotrooph
The level in an Ecological pyramid that includes all the organisms that share the same place in a food chain.
Trophic Levels
Toxic Levels
KeKe Levels
Environmental Systems
Autotrophs--The bottom trophic level where all organisms produce their own food, usually by photosynthesis.
Trophic Levels
Producers
Ominvores
Herbivores
Herbivores--The second trophic level where herbivores eat the primary producers.
Detritivores
Autotrophs
Producers
Primary Consumers
The third trophic level where the animals eat herbivores.
Abiotic Factor
Biotic Factor
Secondary Consumer
Secondary Producer
The fourth trophic level where animals eat secondary consumers or below.
Herbivore
Autotroph
Tertiary Consumer
Tertiary Producer
Only 10% of the energy is passed on from one trophic level to the next. 90% is lost as heat due to cellular respiration or waste.
Tertiary Consumer
Biotic Factor
Abiotic Factor
10% Rule
Complex trophic relationships in an ecological pyramid.
Food Chain
Food Web
Abiotic Factor
Biome
Parts of an ecosystem that are living or deal with the living. Examples include producers, consumers, decomposers, predation, disease, competition, parasitism, and symbiosis.
Abiotic Factors
Biotic Factors
Community
Population
What is the primary purpose of the OpenSciEd 7.5 curriculum?
To provide a comprehensive guide for teaching advanced physics concepts.
To offer a structured approach to teaching middle school science.
To introduce students to basic chemistry experiments.
To focus on environmental science and sustainability.
Which of the following best describes a key feature of the OpenSciEd 7.5 approach to science education?
It emphasizes rote memorization of scientific facts.
It encourages hands-on experiments and inquiry-based learning.
It focuses solely on theoretical knowledge.
It limits the use of technology in the classroom.
In the context of OpenSciEd 7.5, what is the role of data interpretation in science learning?
To memorize data tables and charts.
To analyze and draw conclusions from scientific data.
To ignore data and focus on textbook information.
To use data only for standardized testing.
How does OpenSciEd 7.5 integrate real-world applications into its science curriculum?
By using only historical scientific discoveries.
By connecting scientific concepts to everyday life situations.
By focusing exclusively on laboratory experiments.
By avoiding real-world examples to maintain focus on theory.
