Energy transformations

Energy transformations

Pencil and paper
Overview
Connecting to the Curriculum
Marking Student Responses
Working with Students

Everyday Objects
Hand-turned egg beater
Battery charger
Battery clock with moving hands		 Torch
Wind-up toy		 Digital watch
Hair dryer

Match the name of the everyday object above with the main energy transformation occurring in each object. There is one extra object.

Energy transformation

Everyday object

a)

Elastic potential energy kinetic energy

  

b)

Chemical energy radiant energy

  

c)

Electrical energy chemical potential energy

  

d)

Mechanical energy kinetic energy

  

e)

Chemical energy kinetic energy

  

f)

Chemical energy light energy

  
Level:
5
Curriculum info: 
Science, Knowledge, Physical World
Keywords: 
physics concepts, energy, energy transformation, matching
Description of task: 
Students are asked to match six everyday objects to the main energy transformation that occurs in each of these objects.
Answers/responses: 
 

Y11 (04/01)
a) Wind-up toy very easy
b) Digital watch very difficult
c) Battery charger moderate
d) Hand-turned egg beater moderate
e) Battery clock with moving hands moderate
f) Torch very easy
Diagnostic and formative information: 
  Common error
b) 50% of students answered 'hair dryer'.
22% of students answered 'battery charger'.
c) 21% of students answered 'hair dryer'.
d) 19% of students answered 'battery clock with moving hands'.