Food chains and webs
Difference between a producer and a consumer.
Producer doesn't need to consume other organisms
What is the chemical formula for water?
h2o
List the 3 things needed for photosynthesis
Water, sunlight, air
What is the variable that you purposely change in an experiment?
Independent variable
What force keeps objects on the ground?
Gravity
In a food chain, what do arrows show?
Gets eaten by - Flow of energy in an ecosystem.
What are the 3 states of matter?
solid, liquid, gas
Why are decomposers important in ecosystems?
They break down dead matter and recycle nutrients
What type of graph is used to show the relationship between two continuous variables?
Line
The formula for the area of a rectangle is length × ______
Width
What trophic level are herbivores on?
level 2
What is the smallest part of an element?
An atom
How can bushfires benefit Australian ecosystems?
They help certain plants germinate and recycle nutrients into the soil
What is the purpose of repeating trials in an experiment?
To gain an average - added reliability
What is the main gas we exhale?
Carbon dioxide
Name given to an animal with no animals preying on them
apex predator
What does the atomic number tell you about an atom?
Number of protons it has
What is competition?
When organisms fight for the same resources such as food or shelter
What is a hypothesis?
An educated guess; or a testable scientific idea
Which part of a plant takes in water?
Roots
Why are food webs more accurate than food chains?
They show multiple feeding relationships rather than one linear path
What is the difference between a compound and a mixture?
Compounds are chemically combined - mixtures can be separated.
What term describes a species that is not native and causes harm to the environment?
Invasive
List 5 sub-headings used in a scientific report
Title, aim, hypothesis, method, discussion, conclusion
Students are testing which type of ball is the bounciest, on different surfaces. List 2 controlled variables needed for this experiment
Drop ball at same height, same amount of force, same conditions