5th Grade - SCIENCE - Chapter 8 TEST Flashcards
True or false
Mann cannot destroy what God has created and is maintaining
Ture
True or false
All stressors are man-made
False
True or false
Man honors God by using his resources wisely
True
True or false
Photosynthesis and respiration are part of the nitrogen cycle.
False
True or false
Areas of the earth that have only two seasons usually have a wet season and a dry season.
Ture
True or false
Fires are never beneficial to an ecosystem.
false
True or false
Consumers get nitrogen compounds by eating other animals or plants.
True
True or false
Carbon dioxide is released into the air during decomposition.
True
A _____ is a regular pattern of change.
cycle
Nitrogen is most often changed into usable compounds by _____.
bacteria
Regular division of the year are called _____.
seasons
During _____, plants take in carbon dioxide and release oxygen.
photosynthesis
The water cycle includes precipitation, transpiration, _____ and condensation.
evaporation
During _____, people and animals breathe in oxygen and breathe out carbon dioxide.
respiration
In many parts of the earth, the ____ changes as the seasons change.
temperature
Plants release water vapor into the air through ____.
transpiration
The largest man-made stress is probably _____.
habitat destruction
A _____ is any physical hazard to life caused by having too much or too little of things needed for life.
stress
This occurs whenever an ecosystem receives more water than it can store or use.
monsoon
A _____ occurs whenever an ecosystem receives less water than it needs.
drought
The gradual changes in the populations or organisms in an ecosystem are called _____.
succession
Plant and animal species that originally live in an ecosystem are called _____.
native species
A species is considered ____ when it last known member dies.
extinct
A species becomes _____ when its population is so small that the species may soon become extinct.
endangered
Species that are not native to an ecosystem and can cause harm are ____.
invasive
How is a drought different from other natural disasters?
It does not have a definite beginning or ending.
What is one problem that invasive species can bring to an ecosystem?
- increased number of predators of a native species
- diseases
- increased competition for food and water
Give examples of how two cycles are dependent on each other
- water is needed for the water cycle and for the carbon cycle during photosynthesis
- precipitation is part of the water cycle and also carries nitrogen compounds down to earth
- In autumn, the leaves fall and decay. Bacteria breakdown the leaves to form nitrogen compounds. During Spring, plants grow and produce new leaves, which are needed for photosynthesis to occur.
