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1. Living organisms, like you, get their energy to move and do work from eating food. Trace the energy transformations that occur from the original radiant solar energy used by plants to mechanical energy in living systems. 130 120 140 70 30 50 40 10 60 8 7 6 5 4 9 3 2 180 80 20 160 90 150 170 100 110 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

2. Plants convert the radiant solar energy to chemical energy through the process of photosynthesis. • The plant is harvested using mechanical energy. • The machine that does the harvesting converts chemical energy into mechanical energy. • Transportation and processing will also involve the conversion of chemical energy to mechanical energy. • When people eat food, their bodies convert the chemical energy stored in food into mechanical energy.

3. Describe potential & kinetic energy 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 80 180 20 90 160 150 170 100 110 1 Seconds Left:

4. Potential Energy: Stored energy Amount of useable energy within a body at rest Kinetic Energy: Energy that a body has as a result of its motion.

5. A basketball is thrown in the air. • Describe the relationship of kinetic and potential energy within the basketball as it: • leaves the student's hands, at point A • is halfway to the top of the arc, at point B • is at the top of the arc, at point C • is halfway down the other side, at point D Seconds Left: 50 140 130 120 70 40 30 10 60 8 7 6 9 5 4 3 2 0 180 20 90 160 150 170 80 100 110 1

6. Kinetic and potential energy are converted into one another throughout the path of the ball. Before the player releases the ball, the ball has potential energy but no kinetic energy because it is not moving. • When the player releases the ball at point A, he sets it into motion by exerting a force, thereby giving it kinetic energy. • As the ball rises to point B, the ball slows down. In the process, kinetic energy is converted into potential energy. • When the ball reaches the top of its path at point C, much of the kinetic energy has been converted into potential energy. This is the point where the ball has the most potential energy. • As the ball falls to point D, the ball speeds up, and its height decreases. As a result, potential energy is converted back into kinetic energy.

7. List and describe the three types of heat transfer 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 20 80 90 160 150 170 100 110 1 Seconds Left:

8. Radiation -A way in which energy is transferred from place to place in the form of a wave. The process by which energy travels across space. • Convection - The movement of heat by currents in liquids or gases. Hot fluids (liquids or gases) rise, and cold fluids sink. • Conduction - The transfer of heat energy through a substance or from one substance to another by direct contact of atoms or molecules.

9. How does the Sun transfer energy to the Earth? 60 140 130 120 50 0 40 30 70 9 8 7 6 10 5 4 3 2 180 20 80 90 160 150 170 100 110 1 Seconds Left:

10. The Sun transfers energy (heat & light) to the Earth by radiation.

11. Draw a diagram illustrating convection. 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 80 20 90 160 150 170 100 110 1 Seconds Remaining:

12. Cold water sinks How water rises

13. Draw a diagram illustrating how heat moves between two objects at different temperatures.(hint: heat is a one-way street!) 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 80 20 90 160 150 170 100 110 1 Seconds Left: