Science 7th Grade Chapter 2 (2.1 & 2.2) Energy Flow in Ecosystems & Cycles of Ma

53 cards

Science 7th Grade Chapter 2 (2.1 & 2.2) Energy Flow in Ecosystems & Cycles of Ma tter


 
  
Created Nov 2, 2012
by
cmarlee

 

 
Table View
 
Download
 
Print

Flashcard Set Preview

  Side A   Side B
1

Producer

 

An organism that can make its own food.  (like plants, algae, and some bacteria)(example:...

2

Consumer

 


An organism (as a member of an ecosystem) that obtains energy by feeding...

3
What are the 3 classifications of "consumers?" 
 

herbivores
carnivores
omnivores 

4
Herbivore
 
Consumers that eat only plants
5
Carnivore
 
Consumers that eat only animals.
6
Omnivore
 
consumers that eat both plants and animals.
7

Scavenger

 
a carnivore (eats only animals) that feeds on the bodies of dead organisms. 
8
 What are 2 examples of scavengers?
 
(examples are catfish and vultures) 
9
Decomposer 
 
These organisms break down wastes and dead oranisms and return the raw materials to the ecosystems. ...
10
Who are nature's recyclers?
 
Decomposers
11
What does evergy enter most ecosystems as?
 
sunlight (and then it is converted into food molecules by producers.)
12

The movement of energy through an ecosystem can be shown in diagrams called ____ ______...

 
food chains and food webs
13
food chain
 
A series of events in which one organism eats another and obtains energy.
14

How does. a food chain work?

 

You can follow a food chain in a diagram like the one on page 45.  The 1st organism...

15
What is a food web?
 
A food chain only shows 1 path of energy moving through an ecosystem, but organisms eat different...
16
Lavel the Water Cycle diagram
 

p 49 has an example

17
Label the Carbon & Oxygen Cycle diagram
 

p 51 has an example

18
Label the Nitrogen Cycle
 
page 52 has an example
19

Evaporation

 
The process by which  molecules of liquid water absorb energy and hcange to a gas. ...
20

Condensation

 
As water vapor rises higher in the atmosphere, it cools down.  The cooled vaport then...
21
Precipitation
 
Drops falling back to Earth -- rain, snow, sleet, or hail.  Most falls back into oceans...
22

Surface Runoff

 

Precipitation that falls onto land that does not soak into the soil, but instead runs...

23
Carbon Cycle and Oxygen Cycle
 
These are the processes by which carbon and oxygen are recycled and they are linked.
24
Oxygen Cycle
 
Like the Carbon Cycle; oxygen cycles through ecosystem.  Producers (like trees) release...
25
Photosynthesis
 
The process of producers using the sun's energy to turn water and carbon dioxide into food...
26
Root Nodule
 

 the bumps on roots have bacteria that fix the free nitrogen into simple compounds

27
Root Nodule
 

 the bumps on roots have bacteria that fix the free nitrogen into simple compounds

28
Root Nodule
 

 the bumps on roots have bacteria that fix the free nitrogen into simple compounds

29
Root nodule
 
the bumps on roots that bacteria on fix free nitrogen into simple compounds
30
Nitrogen fixation
 

The process of changing free nitrogen into a usable form of nitrogen.  (Bacteria...

31
Fixed nitrogen
 
Most organisms can only use nitrogen once it has been "fixed" or combined with other...
32
Free nitrogen
 

Nitrogen that is by itself.  Once it is combined with other elements to make a compound...

33
What are the 3 main energy roles organisms can have in a food web?  Give an example of...
 
Producers (trees)
Consumers (caterpillars)
Decomposers (bacteria or mushrooms)
34
What are the 4 types of consumers?  Give an example of each?
 

herbivores - caterpillars and deer
carnivores - Lions and spiders
omnivores...

35
What is the major difference between a 1st level consumer and a 2nd level consumer?
 
The first-level consumers are herbavores and second-level consumers are omnivores or carnivores?
36

In which direction do arrows point in a food web?  (from what to what?)

 

The arrows point from a producer or lower level consumer to a higher level consumer?

37

Do food webs show interactions between member of a population OR a community?  Why?

 
A community I think because it takes many different populations to link in a food web.
38

In general, how many energy-flow pathways are shown in a food chain?  In a food web?

 
In general, ____ ??
39
Does MATTER (H2O, C & O, N) get re-used as it moves through an ecosystem, or does it run...
 
I think matter gets reused by one of the cycles.
40
How does CARBON move through the Carbon & Oxygen Cycle?  How does OXYGEN move through?
 
They are linked cycles where producers, consumers and decomposers all play a role in recycling...
41
What is the role of PLANTS (producers) in the ...

a.  Nitrogen Cycle?
 
a.  plants in the Nitrogen Cycle have roots that fix free nitrogen into simple compounds,...
42
Why is it important that nitrogen is "fixed?"  What organisms require "fixed"...
 

Nitrogen has to be fixed because most organisms can only use "fixed" (combined) nitrogen.

43
Why is it important that nitrogen is "fixed?"  What organisms require "fixed"...
 

Nitrogen has to be fixed because most organisms can only use "fixed" (combined) nitrogen.

44
Why is it important that nitrogen is "fixed?"  What organisms require "fixed"...
 

Nitrogen has to be fixed because most organisms can only use "fixed" (combined) nitrogen.

45
Why is it important that nitrogen is "fixed?"  What organisms require "fixed"...
 

Nitrogen has to be fixed because most organisms can only use "fixed" (combined) nitrogen.

46
Why is it important that nitrogen is "fixed?" What organisms require "fixed"...
 

Nitrogen has to be fixed because most organisms can only use "fixed" (combined) nitrogen. 

47
Can you convert between units of the metric system?
 
x
48
Can you identify IV and DV from an experiment table?
 
x
49

Do you know where basic information is located in a data table?

 
x
50
Most important: Did you learn the material on the Haiku page?
 
x
51
Also most important:  Do you know that material on the 2.1 Notes Worksheet and the
 
x
52
Did you read and understand the book section 2.1 and section 2.2 (they start on page 42)?
 
x
53
Did you review the Big Chunky Lab, 1st Quiz & First test?
 
x

No comments yet! Be the first to add a comment below!

Please login to post comments.
After login, we will forward you back to this flashcard.


Upgrade and get a lot more done!
Upgrade    Cancel