Which of the following hypotheses cannot be tested using the scientific method? If the temperature is increased, the reaction ra
te of HCl and NaOH will increase. Cold weather causes car tires to deflate. The bombing of Hiroshima ended World War II. If students do more homework their grades will improve.
<span>Hypotheses generally (although not always) follow an "If-then" format. This eliminates the first and fourth choices. Of the other two, the second choice (regarding cold weather and tires) can still be tested and verified. The third statement, regarding the end of WWII, is a statement that can't be verified to any appreciable extent and can only go on eyewitness testimony and historical testimony, so it fails the scientific method test.</span>
A black hole is a region of spacetime exhibiting gravitational acceleration so strong that nothing. No particles or even electromagnetic radiation such as light, can escape from it.
