Science Olympiad Miscellaneous Worksheet-23

Science Olympiad Miscellaneous Worksheet-23

1. What is the shape of pure carbon fullerenes?

(a) hollow tube

(b) hollow ball with a pattern like geodesic dome

(c) flat layers

(d) hard, solid crystal shaped like a ball

2. The boundary between two plates moving together is called ______.

(a) divergent boundary               (b) convergent boundary

(c) transform boundary              (d) lithosphere

3. About 90% of all Tsunamis occur in this ocean.

(a) Atlantic Ocean                        (b) Indian Ocean

(c) Pacific Ocean

4. Which of the following would result in chemical change?

(a) boiling water                           (b) burning wood

(c) tearing paper                          (d) melting wax

5. _____ is the building block of matter.

(a) Nucleus       (b) Atom            (c) Proton          (d) Electron

6. We experience day and night on the Earth because ______.

(a) the Moon orbits the Earth   (b) the Earth is spinning

(c) the Earth needs to sleep       (d) the Earth is tilted

7. Tides cause ocean water levels to rise and fall every:

(a) 6 hours        (b) 10.5 hours   (c) 12.5 hours   (d) 24 hours

8. What results when the moon is in Earth's umbra?

(a) a total solar eclipse                (b) a total lunar eclipse

(c) a partial solar eclipse            (d) a partial lunar eclipse

9. How can a scientist safely tell whether an unknown solution is salt in water or sugar in water?

(a) by tasting the solution

(b) by smelling the solution

(c) by testing the electrical conductivity of the solution

(d) by filtering the solution

10. Water taken from plants on the earth's surface into the air is called:

(a) Evaporation                            (b) Transpiration

(c) Condensation

11. Metal bridges are built with expansion joints because in the summer _______.

(a) the hot metal evaporates

(b) metal contracts in the sun

(c) the metal in the bridge may expand in size

(d) some metal can reach melting point

12. A mixture containing particles that are too small to be seen easily but are large enough to scatter a light beam is called:

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

13. The result of plate movement can be seen at _______.

(a) abyssal plains                         (b) ocean margins

(c) plate centers                            (d) plate boundaries

14. A wheelbarrow, pulley, and wedge are all examples of:

(a) Levers                                       (b) inclined planes

(c) simple machines                    (d) wheels and axles

15. People who stand in the moon's umbra, the darkest part of its shadow, experience:

(a) partial lunar eclipse.             (b) a partial solar eclipse.

(c) a total solar eclipse.               (d) a total lunar eclipse.

16. Molten material beneath Earth's crust which rises to the surface leads to:

(a) rift valley                                  (b) seafloor spreading

(c) convergent boundary            (d) Pangaea

17. What is the element symbol for Aluminum?

(a) A                    (b) Am                (c) Al                   (d) Au

18. A liquid mixture in which particles can be seen and easily separated by settling or filtration is:

(a) Solution       (b) Suspension (c) Solvent         (d) Solute

19. Which of the following would you find at the bottom of an energy pyramid?

(a) consumer    (b) herbivore    (c) producer      (d) omnivore

20. What is another name for carbon compounds?

(a) Carbohydrates                        (b) Fullerenes

(c) Hydrocarbons                         (d) organic compounds

Answer Key:

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