What molecule captures light energy in plants and algae?
Chlorophyll
How much oxygen did the early atmosphere have?
Little or no oxygen gas.
This layer is where weather occurs
troposphere
Respiration in plants, as in animals, happens all the time (24/7). True or false?
True
1. Which gas is represented by Gas #1?
Nitrogen
The layers of the atmosphere are classified according to changes in...
temperature with height
Which gas is removed from the atmosphere during photosynthesis?
Carbon dioxide (CO2)
What caused the amount of carbon dioxide to decrease and the amount of oxygen to increase in the early atmosphere?
Photosynthesis
Is ozone good or bad for humans?
Both ( in the stratosphere ozone protects us from the UV rays, but ozone can also act as a pollutant at ground level)
Which is the correct order of the atmosphere layers from Earth to space?
troposphere, stratosphere, mesosphere, thermosphere, exosphere
What atoms make up an ozone molecule?
3 oxygen atoms
Scientists believe the Earth formed... when? (give your answer in English)
4.5 or 4.6 billion years ago.
Approximately what percentage of the air is carbon dioxide?
0.037%
What happens to temperature as you go higher in the stratosphere? a) It stays the same b) It gets colder c) It gets hotter d) It is always changing
c) It gets hotter
Why does atmospheric temperature increase with altitude in the stratosphere?
because of the presence of the ozone layer
Which gas makes up approximately 1% of the atmosphere?
Argon
This gas makes up 21% of the dry air
Oxygen
Which are the products of photosynthesis?
Glucose and oxygen / Food and oxygen
What is the fourth atmospheric layer from the ground?
Thermosphere
In the troposphere, temperature _______________ with altitude. a) decreases b) increases c) stays the same d) changes randomly
a) decreases
Respiration is a process that release _______________ for the cell to use.
energy
Photosynthetic organisms release this gas when they produce food.
Oxygen (O2)
(Glucose + O2 -> CO2 + H2O + energy) is the equation for...
Cellular respiration
Where can we find nitrogen in living things?
In proteins and nucleic acids (such as DNA)
This layer of the atmosphere contains the ozone layer
Stratosphere
The goal of cellular respiration is to...
make energy
What does the ozone layer protects us from?
harmful UV rays.
Organisms (plants, algae, some bacteria) get the energy they need for photosynthesis from sunlight. True or false?
True
Earth is the only known planet with an atmosphere.
False
What is the purpose of photosynthesis?
Make food (glucose)
What formed the early atmosphere?
Volcanic activity
Photosynthetic organisms need this gas to produce food.
Carbon dioxide (CO2)
Which would correctly fill in the chart for X,Y, and Z?
X- Carbon Dioxide Y-Oxygen Z-Nitrogen