Practice Exam 3

Question 1

The moon completes a revolution around the earth approximately every:

Answer 1

(A) 28 days

Question 2

Carcinogens are chemicals that cause:

Answer 2

(B) gene mutations

Question 3

3. A paramecium is:

Answer 3

(A) a one-celled organism

Question 4

What large halogen is essential for the func- tion of the thyroid gland?

Answer 4

(D) iodine

Question 5

The brainstem controls:

Answer 5

(B) most muscle movements

Question 6

What element is the most abundant one in the atmosphere?

Answer 6

(B) nitrogen

Question 7

Minerals are necessary for:

Answer 7

metabolic function

Question 8

What’s the only metallic element commonly found as a liquid?

Answer 8

mercury

Question 9

Which of the following isn’t a type of telescope?

(A) Newtonian (B) Copernican (C) Gregorian (D) Hershelian

Answer 9

(B) Copernican

Question 10

A dekagram:

Answer 10

(B) is smaller than a kilogram

Question 11

11. The Aurora Borealis can be seen only in the:

Answer 11

(D) Northern Hemisphere

Question 12

The three important properties of sound waves are:

Answer 12

(D) wavelength, frequency, and speed

Question 13

Between what two planets can most of the asteroids in the solar system be found?

Answer 13

(A) Mars and Jupiter

Question 14

14. At room temperature, an element is a:

Answer 14

(D) liquid, gas, or solid

Question 15

The elements hydrogen and helium com- prise what percentage of almost all matter in the Universe?

Answer 15

(D) 98 percent

Question 16

16. Compounds are created when:

Answer 16

atoms of two or more different ele- ments are combined

Question 17

What theory suggests the Universe will come to an end when its ever-increasing rate of expansion causes all matter to fly apart?

Answer 17

(A) The Big Rip

Question 18

18. A watt measures:

Answer 18

(A) how much electricity is consumed

Question 19

Which of the following planets, known as
gas giants have no rings?

(A) Neptune
(B) Jupiter
(C) Uranus
(D) they all have rings

Answer 19

(D) they all have rings

Question 20

Gas particles move:

Answer 20

more quickly than liquid particles

Question 21

Absolute zero is:

Answer 21

–263 degrees Celsius

Question 22

22. What does the term forensic mean?

Answer 22

(A) pertaining to law

Question 23

Which of the following statements is not true?

(A) The human female chin is usually more rounded or pointed than the human male chin.
(B) The human female pelvis is usually deeper than the human male pelvis.
(C) The human male skull is usually larger than the human female skull.
(D) The human male skull has a larger brow ridge than the human female skull.

Answer 23

(B) The human female pelvis is usually deeper than the human male pelvis.

Question 24

24. A lunar eclipse occurs when:

Answer 24

the moon moves into the earth’s shadow

Question 25

What chemical can be used to detect blood, even if it’s been wiped from a surface?

Answer 25

luminol