Running wild

1234567
Across
  1. 3. A giant wave of some sort but less powerful as a tsunami
  2. 4. Your out of breath after a race
  3. 7. The substance left behind after fires or disasters
Down
  1. 1. A way to destroy something vigorously
  2. 2. When some try’s to scare you they well .....
  3. 5. A way of doing something but with own little twist
  4. 6. What most bugs do when they walk across the ground