science Flashcards
What is the definition of the word ‘sphere’
a round, solid figure
What does the prefix “bio” mean?
life
What is the biosphere?
The place where life exists on planet earth
What are the three components that form part of the biosphere?
the atmosphere,
the lithosphere
the hydrosphere
what are the elements of the lithosphere?
soil
rocks
sand
what are the elements of the hydrosphere?
all the water on earth, in all its forms (liquid, solid and gas)
What does the atmosphere consist of?
All the gases
What are the three most important gases in the atmosphere?
Oxygen
Nitrogen
Carbon Dioxide
What word is used to describe something to do with water?
Aquatic
What word would be used to describe organisms that live in the ocean or salt water?
Marine
What would a marine biologist study
the life of organisms in the ocean
What are the 7 life processes of all living organisms?
Movement
Respiration
Sensitivity
Growth
Reproduction
Excretion
Nutrition
What is cellular respiration?
The process where organisms release energy from their food
What is the meaning of the word “sustain”?
To keep something alive or in existance
What is the meaning of the word “sustainable”?
Something that is able to continue to exist for a long period of time
What are the requirements of living organisms in order to sustain life?
energy
gases
water
soil
favourable temperatures
Where do plants get there energy from?
The sun
Where most organisms (other than plants) get their energy from?
the food they eat (such as plants and other animals)
What do all living things require for cellular respiration?
oxygen
___?_____ is used to release energy from nutrients, and ___?______ and _______?_____ is produced as a waste product of respiration?
Oxygen is used to release energy from nutrients, and
Water and carbon dioxide is produced as a waste product from respiration.
What gas do plants require to photosynthesise?
Carbon dioxide
What gas do plants excrete?
Oxygen
What gas do humans excrete as a waste product when they breathe out?
Carbon dioxide
What do most plants depend on for support, water and minerals?
soil