Question

2. Energy flows through Earth's spheres and changes along the way.

2a. Fill in each blank with the type of energy being described.

The sun gives off SOLAR energy, which enters the atmosphere. Plants absorb some of the energy and perform photosynthesis to convert it into LIGHT energy in the form of sugars. Plants and the animals that eat them then turn that energy into a different form of CHEMICAL energy, in the form of ATP. When plants and animals use the energy, it becomes KINETIC energy.

2b. Describe how energy is conserved in these systems. (2 points)

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5. Cellular respiration is one of the main processes in the fast carbon cycle.

5a. Draw a diagram of cellular respiration that includes these labels: Oz, water, sugar, COz ATP.

5b. Add a star at the point where carbon enters the process and another star at the point where carbon exits the process.

6. Identify the inputs and outputs of photosynthesis.

7. Identify the inputs and outputs of cellular respiration.

Answer 1

2a.

- Solar energy

- Light energy

- Chemical energy (ATP)

- Kinetic energy

2b. Energy is conserved in these systems through the principle of the conservation of energy, which states that energy cannot be created or destroyed, only transformed from one form to another. In the process of energy transfer between the sun, plants, and animals, the total amount of energy remains constant, but its form changes.

5a.

Oz Sugar

| |

v v

Water CO2

| |

v v

ATP*

*Carbon enters the process at the sugar stage and exits the process as CO2.

6. Inputs of photosynthesis:

- Carbon dioxide (CO2)

- Water (H2O)

- Sunlight (solar energy)

Outputs of photosynthesis:

- Oxygen (O2)

- Glucose (C6H12O6)

- Water (H2O)

7. Inputs of cellular respiration:

- Oxygen (O2)

- Glucose (C6H12O6)

Outputs of cellular respiration:

- Carbon dioxide (CO2)

- Water (H2O)

- ATP (chemical energy)