English National Curriculum - Science Science

7. Explain how white light can be dispersed

Mission Objectives

Describe the composition of white light

Explain how white light can be dispersed

Investigate dispersion using a prism

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Keywords

Words and meanings to learn

dispersion

the separating of white light into distinct colours

prism

a three-dimensional shape; in optics, these are usually clear and light can pass through them

nm

nanometre (nm), an SI unit of length equal to 0.000000001m (a billionth of a metre)

spectrum

a range of different examples of the same thing; e.g. a spectrum of light is a range of different types of light

white light

a mixture of all the colours of light

This lesson has been written by

Kate Richards

Kate’s journey as a science educator spans over 15 enriching years. Her passion for unravelling the complexities of the human body led her away from medicine (as she hates blood but loves medical t-shows) and into the world of teaching. She’s had the privilege of nurturing young minds in KS3 and KS4 science, guiding A-level Biology students, and even taught year 4 students in Spain, broadening her teaching horizons early in her career. Kate holds a Masters in Teaching (MTeach) and specialises in biology. Her research for her Master's degree focused on the profound impact of self-efficacy on classroom learning. Beyond the classroom, she finds solace in leisurely family walks and exploring new destinations through travel. She finds that the most rewarding aspect of teaching is witnessing those magical "light bulb moments" when students grasp the intricacies of science right before her eyes. 

Required Resources

Resources: Large white paper, source of white light (torch, lamp), triangular glass prism, round glass of water and lenses.

Handout: Activities to accompany the Mission Assignment.

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