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Spring Semester Review Set 4
King - Science
25
Science
7th Grade
05/27/2009

Additional Science Flashcards

 


 

Cards

Term

Identical twins have the same set of ____.

Definition
genes
Term

Of the following, which are NOT living organisms?

a.

plants

c.

producers

b.

animals

d.

minerals

Definition
minerals
Term

The role a species plays within a community is its ____.

Definition
niche
Term

Anything that restricts the number

of individuals living in a population is ____.

Definition
a limiting factor
Term

Which of the following would help conserve natural resources?

a.

using solar panels

b.

recycling plastic bottles

c.

ridding the environment of harmful pollutants

d.

all of the above

Definition
all of the above
Term

Which of these sources of energy is NOT renewable?

a.

wind

c.

hydroelectric power

b.

solar power

d.

natural gas

Definition
natural gas
Term

Of the following, which is a nonrenewable natural resource?

a.

phosphorus

c.

cotton

b.

wood

d.

water

Definition
phosphorus
Term

Of the following, which is a renewable energy resource?

a.

coal

c.

geothermal energy

b.

kerosene

d.

natural gas

Definition
geothermal energy
Term

Of the following, which helps conserve natural resources?

a.

using a cloth shopping bag instead of a paper bag

b.

riding your bike on short trips around town

c.

planting trees in your front yard

d.

all of the above

Definition
all of the above
Term

All of the following are fossil fuels EXCEPT ____.

a.

natural gas

c.

kerosene

b.

coal

d.

wood

Definition
wood
Term
The three Rs of conservation are ____.
Definition
reduce, reuse, recycle
Term
Soil is a mixture of weathered rock, mineral fragments, water, air and ____.
Definition
decayed organic matter
Term

The layer of soil that contains the

most organic material is called the ____ horizon.

Definition
A
Term

All of the following cause mechanical weathering EXCEPT ____.

a.

ice

c.

burrowing animals

b.

tree roots

d.

carbonic acid

Definition
carbonic acid
Term

The rock and mineral fragments

in soil come from rock that has been ____.

Definition
weathered
Term

The difference between mechanical

and chemical weathering is ____.

Definition

the way they affect the makeup of a rock

Term
Plants cannot grow without ____.
Definition
soil
Term

Minerals found in the B horizon were

dissolved in water and

carried there by a process called ____.

Definition
leaching
Term

Plants don't grow as well when ____ has been lost.

Definition
topsoil
Term
____ turns and loosens soil, improving it for crops, but leaving soil vulnerable to erosion.
Definition
Plowing
Term

Soil erosion occurs ____.

a.

where animals eat away all the plants

c.

on steep slopes

b.

when forests are removed

d.

all of the above

Definition
all of the above
Term
Agents of ____ deposit sediments when they lose their energy of motion.
Definition
erosion
Term
When people plant vegetation, they ____ erosion.
Definition
reduce
Term

Scientists estimate that 14 percent of

all freshwater on Earth exists as ____.

Definition
groundwater
Term
When people remove vegetation, they ____ runoff and the erosion process.
Definition
speed up
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