*Question*
If hammers can cause debris, then what can be used to make debris? Answer choices: - erosion - rivers - a hammer - heat - wind - water pump - c-clamp - screwdriver
**Answer**
a hammer

*Question*
If birds travel long distances, then what travels long distances? Answer choices: - humans - jets - rocks - birds - camels - cocoons - Light - eggs
**Answer**
birds

*Question*
If when energy flows to a light bulb, it will turn on, then what happens when energy flows into a light bulb? Answer choices: - heat energy - dangerous - its destroy matter - it destroys light - it turns on - it grows - sunlight - It expands
**Answer**
it turns on

*Question*
If preservatives are added to food to prolong it's shelf life, then what prolongs the storage life of food in space? Answer choices: - hydrogen and oxygen - preservatives - Dehydration - heating liquids - Fuel cells - heat energy - hard outer covering - layers of fat
**Answer**
preservatives