Organisms and Their Environment Flashcards
Aligned with Kognity
What is nuclear fusion?
The nuclei from small atoms fuse to form larger nuclei and release energy.
The sun is a huge _ _ reactor. Every second, it converts _ million tonnes of hydrogen into energy.
The sun is a huge nuclear fusion reactor. Every second, it converts 4 million tonnes of hydrogen into energy.
Where does the energy from the sun
This energy is transferred into space as electromagnetic radiation, such as heat and light.
Are metals flexible? How does this effect its layout?
Metals can bend or stretch because all the ions are the same size and are therefore organised in regular layers. As a force is applied to the metal, the layers can slide past each other.
What do food webs and food chains show?
Food webs and food chains show the flow of energy
How much energy is lost from one tropic level to another?
As you move from one trophic level to another you lose 90% of the energy
What form does energy transfer to other organisms? Where is some of it transferred other than to organisms?
It is transferred in chemical form from one organism to another. Some of it is transferred to the environment.
Where is most of the energy lost in a food chain/web?
Most of the energy is lost through heat
What are the laws of thermodynamics rule one states?
- Energy cannot be created or destroyed however it can be converted from one state to another.
- Energy Conversion is never completely efficient.
Where does the flow of energy originate?
The flow of energy between organisms originates from the Sun.
Ingestion v.s digestion
Ingestion is the intake of food from outside into the body by swallowing or absorbing. Digestion involves breakdown of food into particles which can be absorbed by the body.
Do all energy transfers and transformations lose some energy as heat?
Yes
