Mystery Science: Why Fireflies Glow

The light coming from a firefly is made by...

• fire

• chemicals

• lightning

• heat

How do fireflies make the glow appear?

• They eat certain foods that cause glowing

• They fly very rapidly

• They combine chemicals together

• They move their abdomen up and down

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What scientists can see and measure are called...

• options.

• fireflies.

• experiments.

• observations.

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While one firefly flashes in the air...

• another one flashes from the ground.

• the firefly's predator is nearby.

• several others are making chemicals.

• other fireflies choose a landing spot.

The firefly in the air is a(n) ____ firefly.

• male

• female

• injured

• enemy

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The firefly on the ground is a(n) _____ firefly.

• queen

• predator

• male

• female

There are over ____ types of fireflies. (choose the closest)

• 2,000

• 120

• 2 million

• 20

What do scientists call "a way to send a message?"

• an observation

• a tribe

• a signal

• a hypothesis

Some male fireflies flash...

• every few seconds

• nonstop

• every hour

• a special code

Some male fireflies make a(n) ______ flash.

• vibrating

• purple

• upward line

• diamond shaped