Science - Combined - 0653 CIE

Energy Flow

Gbogbo ọrọ náà

Trace the energy in any meal back far enough and you arrive at the Sun. Almost every living thing is ultimately powered by sunlight, captured by plants and then passed from organism to organism before draining away into the surroundings as heat. Understanding this one-way flow explains why food chains are short and why producers are everywhere.

In this short lesson you will state that the Sun is the principal source of energy for biological systems, and describe how energy flows through living organisms, from sunlight to chemical energy and finally out to the environment.

Ebumnobi

[Core] State that the Sun is the principal source of energy input to biological systems
[Core] Describe the flow of energy through living organisms including light energy from the Sun and chemical energy in organisms and its eventual transfer to the environment

Akọmọ Ojú-ẹkọ

Energy flow is the foundation of ecology: it explains food chains, why there are few top predators, and why we depend on plants. It links photosynthesis (capturing energy) to respiration (releasing it) and is a common opening to ecology questions.

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Energy Flow. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

The principal source of energy input to biological systems is the: A. soil B. Sun C. wind D. water Answer: B
Plants convert light energy into chemical energy by the process of: A. respiration B. photosynthesis C. transpiration D. digestion Answer: B
In which form is energy stored in a plant after photosynthesis? A. light energy B. chemical energy C. heat energy D. sound energy Answer: B
What eventually happens to the energy that flows through a food chain? A. it is recycled back to the Sun B. it is transferred to the environment, mostly as heat C. it disappears completely D. it is stored forever in top predators Answer: B
Energy flow through an ecosystem is best described as: A. a cycle B. a one-way flow C. stored without loss D. reversible Answer: B