Question

attendance question
read the following scenario and answer the questions that follow. write your answers in english.
part a: scenario
you wake up in the morning and turn off your alarm clock, which works because of electrical energy. you stretch and head to the kitchen, where you eat breakfast. the food gives you chemical energy, which your body uses throughout the day.
on the way to school, you ride your bike up a hill. as you climb, your muscles convert chemical energy into mechanical energy, and as you reach the top, the bike and your body now have gravitational potential energy. when you zoom down the hill, that stored energy changes into kinetic energy as you speed up. friction between the tires and road produces heat energy.
you stop for a moment under a tree and feel the suns light and heat energy. when your phone rings, the electrical energy inside is transformed into sound energy so you can hear it.
answer the following questions based on the scenario above.

1. identify five forms of energy shown in the passage.

five forms of energy shown in the passage are:
____
____
____
____
____

1. which form of energy comes from the food you eat?

the form of energy that comes from the food i eat is ____.

1. when you ride your bike up the hill, what type of energy are you gaining?

when i ride a bike up a hill, i am gaining ____ energy.

1. when you ride down the hill, what energy transformation occurs?

when i ride a bike down a hill, energy is transformed from __ into __ energy.

1. how is energy transformed in your phone when it rings?

when my phone rings, __ energy is transformed into __ energy.

1. where do you see kinetic energy in the passage?

____
part b
write two examples of energy transformations that involve potential or kinetic energy in your own life.

Explanation:

1. The passage mentions electrical energy (alarm clock, phone), chemical energy (food), mechanical energy (riding bike), gravitational potential energy (bike on hill), heat energy (friction), and sound energy (phone ringing). We pick five common ones.
2. Food contains chemical energy which the body uses for various processes.
3. When going up a hill on a bike, height increases and so gravitational potential energy is gained.
4. When riding down a hill, gravitational potential energy (due to height) is transformed into kinetic energy (due to motion).
5. In a ringing phone, electrical energy is transformed into sound energy.
6. Kinetic energy is present when riding the bike and speeding up. For part B, examples can be a ball being dropped (potential to kinetic) and a roller - coaster going down a slope (potential to kinetic).

Answer:

1. Electrical energy, chemical energy, mechanical energy, gravitational potential energy, sound energy
2. Chemical energy
3. Gravitational potential
4. Gravitational potential; kinetic
5. Electrical; sound
6. When riding the bike and speeding up

Part B: A ball being dropped (potential to kinetic), a roller - coaster going down a slope (potential to kinetic)