Chemical to Electrical Energy Practice exercise 2

A family in Kisii noticed their battery-powered wall clock had stopped working. What should they do first?

A family in Kapsoya noticed their battery-powered wall clock had stopped working. What should they do first? (1 mark)

A family in Kapsoya noticed their battery-powered wall clock had stopped working. What should they do first? (1 mark)

A student inserted one dry cell into a torch and noticed the bulb was very dim. When they added a second dry cell, the bulb became bright. What explains this difference?

A student inserted one dry cell into a torch and noticed the bulb was very dim. When they added a second dry cell, the bulb became bright. What explains this difference? (1 mark)

A student inserted one dry cell into a torch and noticed the bulb was very dim. When they added a second dry cell, the bulb became bright. What explains this difference? (1 mark)

A toy car uses two dry cells to operate. What transformation of energy makes the toy car move?

A toy car uses two dry cells to operate. What transformation of energy makes the toy car move? (1 mark)

A toy car uses two dry cells to operate. What transformation of energy makes the toy car move? (1 mark)

An automated irrigation system in Kitale runs on battery power. One day it stops working. What is the most likely reason based on the energy transformation concept?

An automated irrigation system in Kitale runs on battery power. One day it stops working. What is the most likely reason based on the energy transformation concept? (1 mark)

An automated irrigation system in Kitale runs on battery power. One day it stops working. What is the most likely reason based on the energy transformation concept? (1 mark)

A teacher is going on a 3-day camping trip in Tsavo and needs to charge a phone and power a torch. Which energy source best ensures the transformation from chemical to electrical energy for both tasks?

A teacher is going on a 3-day camping trip in Tsavo and needs to charge a phone and power a torch. Which energy source best ensures the transformation from chemical to electrical energy for both tasks? (1 mark)

A teacher is going on a 3-day camping trip in Tsavo and needs to charge a phone and power a torch. Which energy source best ensures the transformation from chemical to electrical energy for both tasks? (1 mark)

During a blackout in Embu, which of the following is the most useful source of power that transforms chemical energy to electrical energy?

During a blackout in Embu, which of the following is the most useful source of power that transforms chemical energy to electrical energy? (1 mark)

During a blackout in Embu, which of the following is the most useful source of power that transforms chemical energy to electrical energy? (1 mark)

During a blackout in Embu, which of the following is the most useful source of power that transforms chemical energy to electrical energy? (1 mark)

Mwikali was listening to her radio powered by dry cells. After several days, the radio stopped working. What is the most likely reason for this?

Mwikali was listening to her radio powered by dry cells. After several days, the radio stopped working. What is the most likely reason for this? (1 mark)

Mwikali was listening to her radio powered by dry cells. After several days, the radio stopped working. What is the most likely reason for this? (1 mark)

Study the diagram below showing a simple electric circuit with two dry cells, a switch (S), and a bulb.What transformation of energy occurs when switch S is closed?

Study the diagram below showing a simple electric circuit with two dry cells, a switch (S), and a bulb. What transformation of energy occurs when switch S is closed? (1 mark)

Study the diagram below showing a simple electric circuit with two dry cells, a switch (S), and a bulb. What transformation of energy occurs when switch S is closed? (1 mark)

Study the diagram of the torch circuit below showing two dry cells, a switch, and a bulb.What type of energy transformation occurs when the switch is closed and the bulb lights?

Study the diagram below showing the internal components of a TV remote including batteries and internal wiring. When a button is pressed on the remote, what transformation of energy occurs to allow it to function? (1 mark)

Study the diagram below showing the internal components of a TV remote including batteries and internal wiring. When a button is pressed on the remote, what transformation of energy occurs to allow it to function? (1 mark)

Which of the following battery setups would best power a device that requires more electrical energy for longer use?

Which of the following battery setups would best power a device that requires more electrical energy for longer use? (1 mark)

Which of the following battery setups would best power a device that requires more electrical energy for longer use? (1 mark)