Science Fact Finder

Characteristics And Functions

1. What chemical elements are found within the human body? [answer]
2. What is the normal pH of blood, urine, and saliva? [answer]
3. How hard does the heart work? [answer]
4. How does the body introduce oxygen to the blood and where does this happen? [answer]
5. How does the immune system work? [answer]
6. How much blood is in the average human body? [answer]
7. What are the seven endocrine glands? [answer]
8. How many cells are in the human body? [answer]
9. How many miles of blood vessels are contained in the body? [answer]
10. How many chromosomes are there in a human body cell? [answer]
11. How long does it take food to digest? [answer]
12. What causes people to sweat when they eat spicy foods? [answer]
13. How much heat is lost through the head when a person is not wearing a hat? [answer]
14. What regulates body temperature in humans? [answer]
15. In the United States, what is the average height and weight for a man and a woman? [answer]
16. What percent of human body weight is water? [answer]
17. What are considered healthy weights for men and women? [answer]
18. Who is the heaviest person that ever lived? [answer]

Parts Of The Body

1. How many muscles are in the human body? [answer]
2. Who is the world's oldest person? [answer]
3. Why does excessive exercise cause muscles to become stiff and sore? [answer]
4. What is the purpose of goose bumps? [answer]
5. How many bones are in the human body? [answer]
6. What is the likely purpose of the human appendix? [answer]
7. What is the funny bone? [answer]
8. What is the basic unit of the brain? [answer]
9. How much skin does an average person have? [answer]
10. In addition to left- or right-handedness, what other left or right preferences do people have? [answer]
11. How many hairs are on an average person's head? [answer]
12. Who first used fingerprints as a means of identification? [answer]

Senses And Sleep

1. What is the difference in the functions of the rods and cones found in the eyes? [answer]
2. What is the length of the human intestine? [answer]
3. Are more people nearsighted or farsighted? [answer]
4. What does it mean to have 20/20 vision? [answer]
5. How often does the human eye blink? [answer]
6. Why do eyes tear when we work with onions? [answer]
7. What are the primary sensations of taste? [answer]
8. What is REM sleep? [answer]
9. How many calories does a person bum while sleeping? [answer]
10. Why do people snore and how loud can snoring be? [answer]