Why do frogs jump? Frogs don't have sharp teeth or claws to defend themselves against...

Why do frogs jump?• Frogs don't have sharp teeth or claws to

defend themselves against predators, the best thing they can do to avoid being eaten is to escape as quickly as possible when they spot a hungry-looking animal approaching them.

• Some kinds of frogs can jump distances up to 20 times their own body length in a single leap.

• When disturbed, frogs often jump into a puddle or pond where they can hide underwater.

• Their erratic zig-zag jumping on land also serves to confuse potential predators.

Potential & Kinetic Energy• Potential energy is energy stored• Kinetic energy is energy in motion• Before the yo-yo begins its fall it has

stored energy due to its position. • As it starts to fall the potential energy

begins to be changed into kinetic energy.

• At the top it has its maximum potential energy.

• At the bottom its potential energy has been converted into kinetic energy so that it now has its maximum kinetic energy.

Materials

• 3 x 5 index card• Paper and pencil

Answer these questions on a sheet of notebook paper

1. Where does the energy come from that allows your frog to move?

2. Can the amount of energy your frog has be changed to make it jump different heights and distances?

3. When does your frog have potential energy?4. When does your frog have kinetic energy?5. When does your frog have the most energy?6. When does your frog have the least energy?

YES, YOU HAVE TO USE COMPLETE SENTENCES!