​A prediction says that if the hypothesis is true, then it should be possible to make observations that agree with the hypothesis.

​FALSE

​​While some animals have blue blood, humans are not among them. The red color of blood comes from hemoglobin in red blood cells. Although blood is a brighter red when it is oxygenated, it is still red when it is deoxygenated. Veins sometimes look blue or green because you view them through a layer of skin, but the blood inside is red, no matter where it is in your body.

​TRUE

​​Earth’s liquid outer core creates a magnetic field around the planet. The electromagnetic energy leaves Earth’s South Pole, and enter the North Pole. But every 200,000-300,000 years the magnetic field will reverse.

​FALSE

​If you have watched a thunderstorm any length of time, you know this is not true. Lightning can strike one place multiple times. The Empire State Building gets struck around 25 times each year. Actually, any tall object is at increased risk of a lightning strike. Some people have been struck by lightning more than once.

​TRUE

The Great Pacific Garbage Patch (GPGP) contains an estimated 79,000 tons of plastic garbage.

The Earth’s ocean currents pool all of the garbage together.