Science Olympiad Miscellaneous Worksheet-18

Science Olympiad Miscellaneous Worksheet-18

1. Which part of our body is made to vibrate by sound waves?

(a) Nerve Cells                              (b) Brain

(c) Vocal Chords                           (d) Eardrum

2. Solubility is dependent on two things. Which of the following is not one of the two?

(a) Temperature                           (b) Pressure

(c) Size                                            (d) All of these

3. What is the definition of a solvent?

(a) The substance that is dissolved.

(b) The substance in which the solute is dissolved.

(c) Unable to be dissolved.

4. What is the pH of a strong alkali?

(a) 6                    (b) 7                    (c) 14                  (d) 1

5. Objects that vibrate with large amplitudes produce what kind of sounds?

(a) High pitch   (b) Quiet            (c) Low pitch    (d) Loud

6. Large objects vibrate slowly and produce what kind of note?

(a) Low pitched                            (b) High pitches

(c) Loud                                          (d) Quiet

7. A metalloid:

(a) May conduct electricity

(b) Can be ductile

(c) Is also called a semiconductor

(d) All of these

8. Which mixture has the largest particle size?

(a) Solution       (b) Colloid         (c) Suspension

9. Which is not an appearance of a solution?

(a) Clear                                         (b) Transparent

(c) Heterogeneous                        (d) Homogeneous

10. What is a combination of two or more substances that are not chemically combined?

(a) Element       (b) Mixture       (c) Compound  (d) None of these

11. A substance that cannot be broken down into simpler substances is:

(a) Compound  (b) Mixture       (c) Element       (d) Atom

12. What year was the virus AIDS first named?

(a) 1983             (b) 1982             (c) 1981              (d) 2005

13. Which of the following is true about the moon?

(a) It has no gravity at all.

(b) It has a constant surface temperature.

(c) It has no atmosphere.

(d) It has liquid water.

14. A mixture of two or more uniformly dispersed substances is a(n)?

(a) Colloid         (b) Solution       (c) Suspension

15. What is highest point of a wave called?

(a) Amplitude   (b) Trough         (c) Crest             (d) Compression

16. A spring tide occurs when

(a) it is the spring equinox.

(b) the sun, Earth, and moon are nearly in line.

(c) the moon is in its first or last quarter phase.

(d) the line between Earth and the sun is at right angle to the line between Earth and the moon.

17. Which of the following is not an example of a colloid?

(a) Milk                                           (b) Jello

(c) Sugar water                             (d) Stick deodorant

18. The distance between one crest and the other is called:

(a) wave length                             (b) Speed

(c) Frequency                                (d) Amplitude

19. What is the lowest point of the wave called?

(a) Trough         (b) Amplitude   (c) Crest             (d) compression

20. What carries a wave?

(a) Medium       (b) Wave            (c) Heat              (d) rope

21. What is a wave?

(a) A vibration that transfer energy.

(b) A disturbance that transfer energy from every place.

(c) An energy disturbance.

(d) A disturbance in water.

Answer Key:

(1)-(d); (2)-(c); (3)-(b); (4)-(c); (5)-(d); (6)-(a); (7)-(d); (8)-(c); (9)-(c); (10)-(b); (11)-(d); (12)-(b); (13)-(c); (14)-(b); (15)-(c); (16)-(b); (17)-(c); (18)-(d); (19)-(a); (20)-(a); (21)-(b)