Question

match the example with the energy transformation it shows. some energy transformations may be used more than once.
steam turning a turbine in a power plant
a solar panel powering a calculator
a plant using sunlight to make food
a student pedaling a bicycle after lunch
wood burning in a campfire
a flashlight turned on in the dark
a grasshopper jumping from a predator
electrical → light thermal → mechanical chemical → thermal light → electrical
light → chemical chemical → mechanical

Explanation:

Step1: Analyze "Steam turning a turbine in a power plant"

Steam has thermal energy. When it turns a turbine (mechanical motion), it's thermal→mechanical.

Step2: Analyze "A solar panel powering a calculator"

Solar panels take light (from sun) and convert it to electrical (to power calculator). So, light→electrical.

Step3: Analyze "A plant using sunlight to make food"

Plants use light (sunlight) and through photosynthesis make chemical (food - glucose etc.). So, light→chemical.

Step4: Analyze "A student pedaling a bicycle after lunch"

After lunch, student has chemical energy (from food). Pedaling is mechanical. So, chemical→mechanical.

Step5: Analyze "Wood burning in a campfire"

Wood has chemical energy. When burned, gives thermal (heat). So, chemical→thermal.

Step6: Analyze "A flashlight turned on in the dark"

Flashlight uses electrical (from battery) to produce light. So, electrical→light.

Step7: Analyze "a grasshopper jumping from a predator"

Grasshopper has chemical energy (from food etc.). Jumping is mechanical. So, chemical→mechanical.

Answer:

Steam turning a turbine in a power plant: thermal→mechanical; A solar panel powering a calculator: light→electrical; A plant using sunlight to make food: light→chemical; A student pedaling a bicycle after lunch: chemical→mechanical; Wood burning in a campfire: chemical→thermal; A flashlight turned on in the dark: electrical→light; a grasshopper jumping from a predator: chemical→mechanical.