Chapter 7b, the Cyclops jumping up when a red-hot stake is thrust into his eye:

ἀναπηδάω  I jump up
καταπηδάω I jump down
When the alarm-clock rings we ἀναπηδῶμεν 
Sit down on an ant-hill and you βοᾷς καὶ ἀναπηδᾷς 

And when talking about future jumpings up and down:

ἀναπηδήσω  I'm going to jump up
καταπηδήσω I'll jump down
When the alarm-clock rings we'll ἀναπηδήσομεν 
Sit down on an ant-hill and you will βοήσης καὶ ἀναπηδήσης