WhyloWhylo

Sky & space · Ages 3–9

How do rainbows form?

A rainbow appears when sunlight bends and reflects inside water droplets. Different colors bend by different amounts, so the light spreads into a band of colors.

Read or listen to the story

For little wonderers, ages 3–5

Sunshine holds many colors. Little drops of water help spread them out so we can see a rainbow.

A little deeper, ages 6–9

Light refracts when entering and leaving a raindrop, and some reflects inside it. The different wavelengths leave at different angles. With sunlight behind you and droplets ahead, many drops send different colors toward your eyes.

A Whylo Sample Story

The colors after the rain

Tesshadplannedapicnicforherstuffedrabbit.Thenrainbegantappingonthewindow.Shemadeanindoorpicnicinstead,withafoldedtowelforgrassandapaperplateforapond.Rabbitseemedpleased.Tessstillwishedforalittlesunshine.

Later,therainsoftenedandsunlightreachedthekitchenfloor.Mumcalledfromthedoorway.Acrosstheskywasarainbow.TessbroughtRabbitoutundertheporch.‘Whoputthecolorsupthere?’sheasked.‘Theywereinthesunlightalready,’Mumsaid.‘Thewaterdropshelpusseethemseparately.’

Tessimaginedeachdropasatinyvisitorcarryinglight.Mumexplainedthatlightbendsonitswayintoandoutofadrop,andsomebouncesinside.Differentcolorsbenddifferently.ThestoryinTess'sheadgrewintoaparadeofcolors,eachtakingaslightlydifferentturn.

‘CanweputitinRabbit'spicnicbasket?’Tessasked.Mumshookherhead.Arainbowwaslightreachingtheireyes,notaribbontheycouldfold.Tessconsideredthis.Somelovelythingswerefornoticing,notcollecting.

Whentherainbowfaded,theywentinside.Tessdrewoneoverthepaperpond.ShegaveRabbitapretendsandwichandtoldhimaboutthewaterdrops.Thepicnichadgainedastory,evenifithadn'tgainedarealrainbow.

Tess and Mum watch a rainbow from the porch while Tess holds her stuffed rabbit.
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Free to read and listen · AI narration · No account needed

Read the full story

Tess had planned a picnic for her stuffed rabbit. Then rain began tapping on the window. She made an indoor picnic instead, with a folded towel for grass and a paper plate for a pond. Rabbit seemed pleased. Tess still wished for a little sunshine.

Later, the rain softened and sunlight reached the kitchen floor. Mum called from the doorway. Across the sky was a rainbow. Tess brought Rabbit out under the porch. ‘Who put the colors up there?’ she asked. ‘They were in the sunlight already,’ Mum said. ‘The water drops help us see them separately.’

Tess imagined each drop as a tiny visitor carrying light. Mum explained that light bends on its way into and out of a drop, and some bounces inside. Different colors bend differently. The story in Tess's head grew into a parade of colors, each taking a slightly different turn.

‘Can we put it in Rabbit's picnic basket?’ Tess asked. Mum shook her head. A rainbow was light reaching their eyes, not a ribbon they could fold. Tess considered this. Some lovely things were for noticing, not collecting.

When the rainbow faded, they went inside. Tess drew one over the paper pond. She gave Rabbit a pretend sandwich and told him about the water drops. The picnic had gained a story, even if it hadn't gained a real rainbow.

What we learned

Water droplets separate sunlight into colors. A rainbow is a light effect, not a solid object.

One more little discovery

Draw a rainy-day scene, then add sunlight behind the person watching and a rainbow in front. Talk about where the light and water are. Never look directly at the Sun.

Talk about it together

Were the colors made by the raindrops, or were they already in the sunlight?

Our characters and adventures are fictional. Explore the science behind this question:

NASA Space Place: Rainbow Science

Keep wondering

All questions