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With mouth wide open, vibrating air coming up the throat from the vocal chords leaving the open mouth and spreading in all directions. Hi, I am Janice VanCleave, author of 50+ best-selling science experiment books for children ages 4 through high school. I taught science for 27 years and now am creating this science website.   My scream was not staged. The picture was to be of two adult cats, which I was holding. A microsecond before the camera snapped, the two cats dug their claws into my skin as they prepared to leap out of my arms. A picture like this is great for making inferences. Kids could make "guesses" as to why I am screaming. They would be drawing on facts from the photo, such as I look like I am in pain or maybe I am just pretending.

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Home » Jesus Lizard

Jesus Lizard

By Janice VanCleave

lizard-jesus-12-17-2010-10-13-31-am

Question: How fast can the Jesus Lizard run on water?

Answer:

The lizard is called a  “Jesus Lizard” because it can run across the top of water. This is because the lizard has large hind feet with scaly fringes on the sides of the third, fourth, and fifth toes. As you can see in the photo, these fringes are pressed  the toes when this lizard walks on land.

Living near water, when the lizard senses danger it heads for water, spreads the fringes and off it runs at a speed of about 5 feet (1.5 m) per second across the water’s surface.

The spread fringes increases the surface area of its feet and as it quickly slaps it feet against the water’s surface, a tiny bit of air is trapped between it feet and the water. This ever so tiny air pocket acts much like itsy-bitsy flotation devices. Even so, the lizard can only run so far, about 15 feet (4.5 m) before gravity wins and the lizard sinks.

lizard-jesus

No problem, the lizard is an excellent swimmer and can stay underwater for long periods of time.

DID YOU KNOW?

Location: Tropical rain forests of Central America, from southern Mexico to Panama

Size: 2 to 2.5 feet (61 to 76 cm) including tail

Weight: up to 7 ounces (200 g)

Miscellanies Adaptations: Can run on water, excellent swimmer and capable of staying under water for up to 30 minutes.

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The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

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