AnswersFL-2003310-Physical ScienceUnit Test

Unit Test — Unit test Answers

12 verified answers1 views
1
Free Preview

What would happen to life on Earth if all the liquid fresh water were used up?

A
All organisms would adapt to using salt water.
B
Organisms would carry out life functions without water.
C
Animals would be affected, but some desert plants would survive.
D
Life could no longer exist on Earth.
2
Free Preview

Sydney drew a flow chart to illustrate the nitrogen cycle.

Question illustration
X
X: Producers undergo photosynthesis.Y: Nitrogen compounds are released into the air.
X
X: Nitrogen compounds are released into the air.Y: Producers undergo photosynthesis.
X
X: Free nitrogen is in the atmosphere.Y: Producers absorb nitrogen compounds through their roots.
X
X: Producers absorb nitrogen compounds through their roots.Y: Free nitrogen is in the atmosphere.
3

Recall that photosynthesis consists of two sets of chemical reactions. Which of these describes the energy conversions that occur during the light-independent reactions?

A
light energy à chemical energy
B
chemical energy à chemical energy
C
chemical energy à mechanical energy
D
mechanical energy à mechanical energy
4

What would happen to life on Earth if all the liquid fresh water were used up?

A
All organisms would adapt to using salt water.
B
Organisms would carry out life functions without water.
C
Animals would be affected, but some desert plants would survive.
D
Life could no longer exist on Earth.
5

Which is an energy conversion that occurs during cellular respiration?

A
ADP à ATP
B
FADH2 à FAD
C
pyruvate à glucose
D
light energy à chemical energy
6

While playing soccer, Carla slides across one of the lines on the field. When she stands up, what base does she dust off?

A
calcium hydroxide
B
ammonium hydroxide
C
zinc hydroxide
D
potassium hydroxide
7

The diagram shows two water molecules. What does the dotted line between the water molecules represent?

Question illustration
A
a polar bond
B
a covalent bond
C
a hydrogen bond
D
an electronegative bond
8

Which best explains why a thick tropical forest filled with large plants typically has a lot of water vapor in the air?

A
The plants undergo transpiration.
B
The plants undergo condensation.
C
The plants prevent water from evaporating.
D
The plants prevent water from becoming runoff.
9

greatest

b
blood, pH = 7.2
l
lemon juice, pH = 2
s
soda, pH = 3.5
b
bleach, pH = 13.5
10

Which two compounds are used in batteries?

A
sulfuric acid and potassium hydroxide
B
ammonium hydroxide and nitric acid
C
potassium hydroxide and nitric acid
D
sulfuric acid and ammonium hydroxide
11

Which organisms release carbon dioxide as waste?

c
consumers only
c
consumers and decomposers
p
producers and decomposers
p
producers only
12

best

T
The solution has more hydrogen ions than hydroxide ions.
T
The solution has fewer hydrogen ions than hand soap.
T
The solution has the same number of hydrogen ions as apple juice.
T
The solution has the same number of hydrogen ions and hydroxide ions.
13

Which two compounds are used in batteries?

A
sulfuric acid and potassium hydroxide
B
ammonium hydroxide and nitric acid
C
potassium hydroxide and nitric acid
D
sulfuric acid and ammonium hydroxide
14

The diagram shows two water molecules. What does the dotted line between the water molecules represent?

Question illustration
A
a polar bond
B
a covalent bond
C
a hydrogen bond
D
an electronegative bond
15

The diagram illustrates the water cycle.

Question illustration
A
U
B
W
C
X
D
Y

Did you find these answers helpful?

More from this Course

Quiz
13 verified answers

Unit Test

Quiz
12 verified answers

Unit Test

Quiz
25 verified answers

Cumulative Exam