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Measurement (mass & weight): Food Chain

3 - Further Challenges

Inspired by Nature Worksheet

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Further Challenges

In the related clip (below), we see one of the biggest animals in the ocean – the humpback whale. Fully grown humpback whales have a mass of around 30,000 kg. Incredibly, humpback whales feed on one of the smallest animals in the ocean – krill. A single krill has a mass of around 2 g.

How many krill would be equal to the weight of a humpback whale? Discuss how you went about solving the problem with a partner. What was the same? What was different?

Related Clip

An ocean food chain that includes algae, krill and humpback whales.

Credit: BBC One – Frozen Planet