ACTIVITY 1, CAN BE OR CANNOT BE? Direction: From your previous knowledge, tell whether the following hypothesis can be tested or not by writing yes or no on the appropriate column. Can be tested? (Yes or No) Hypothesis 1. If the polar ice caps begin to melt, then the amount of salt in ocean will change. 2. Dogs use mind control on their owners to be taken for walks and car rides. 3. If an animal is deaf, then it cannot hear. 4. A propeller with smaller blades can propel an airplane than a propeller with large blades. 5. Birds are guided by the spirits of dead eagles.​