test question

1. 4TH
PERIODICAL TEST REVIEWER
SCIENCE 6
The underlined choice in each item indicates the correct answer.
1. The following are compounds, EXCEPT________.
a. baking soda c. salt
b. iron d. ammonia
2. Give the total number of hydrogen atoms in this chemical equation.
CH4 + O2 CO2 + 2H2O
a. 6 c. 4
b. 2 d. 8
3. Which describes a colloid?
a. Has particles that scatter light making them visible in a medium
b. Has particles that allow light to pass through
c. Its particles suspend at the bottom
d. Has particles that are big enough to be seen by our eyes which are evenly distributed
4. Which mixture can be separated through evaporation method?
a. milk c. petroleum
b. salt solution d. iron fillings
5. How are you going to separate the components of different food dye?
a. chromatography c. decantation
b. mechanical separation d. distillation
6. Tissue, organ, cell, organism, biosphere, system. Which organization comes in 4th
order according to
the hierarchical organization of life?
a. organism c. system
b. cell d. tissue
7. Which is an example of a smooth muscle? Muscles in the_____.
a. arms c. liver
b. heart d. rib
8. Which bone is INCORRECTLY paired to its name?
a. wrist- metacarpal c. skull-cranium
b. forearm- humerus d. knee- tibia
9. What is the important function of the bone marrow?
a. releases calcium c. makes collagen
b. produces blood cells d. helps in the production of calcium phosphate
10. Muscles of heart are called_____.
a. cardiac c. synovial
b. limbic d. epithelial
11. Which activity is controlled by VOLUNTARY muscles?
CEBU ROOSEVELT MEMORIAL COLLEGES
BASIC EDUCATION DEPARTMENT
F. MANUBAG ST. LOURDES, BOGO CITY, CEBU

2. a. digestion of food c. breathing
b. circulation of blood d. bending of knee
12. The following are functions of the skin, EXCEPT_____.
a. prevent the loss of body fluids
b. regulate body temperature
c. convert food into nutrients
d. eliminate waste materials
13. Which statement is true?
a. The more melanin in the skin, the darker the color.
b. The epidermis is thickest layer of the skin.
c. Melanin is responsible for protecting nails and hair.
d. Our skin is covered by olfactory nerves.
14. Chemical digestion involves_________.
a. physical breaking down of food
b. secretion of chemical agents to break the food
c. using the teeth to break the food
d. grinding and chewing the food
15. Complete digestion of food occurs in the_______.
a. stomach c. small intestine
b. large intestine d. rectum
16. The food moves from the esophagus to the stomach through_______.
a. peristalsis c. mastication
b. defecation d. absorption
17. How does the liver help in the digestion of fats and proteins?
a. It contains bolus that dissolves fat
b. Through its bile
c. It has pancreatic juice
d. Through its gastric juice and enzymes
18. The large intestine is responsible for________.
a. digestion of fats and proteins
b. absorption of nutrients from the food into the bloodstream.
c. breaking down the food into a form where nutrients can be extracted
d. absorption of undigested food
19. This digestive organ has the ability to undergo regeneration
a. pancreas b. liver
b. gall bladder d. stomach
20. Mastication is an example of______.
a. mechanical digestion c. chemical digestion
b. natural digestion d. synthetic digestion
21. Where does the exchange of carbon dioxide and oxygen take place?
a. alveoli c. bronchi
b. bronchioles d. diaphragm
22. What happens to your diaphragm when you inhale?
a. relaxes c. stays the same
b. decreases d. contracts
23. Platelets are very important in ____________.
a. protecting the body against disease-causing microorganisms

3. b. bringing carbon dioxide
c. preventing the loss of too much blood
d. defending the body against infections and diseases
24. Carrier of deoxygenated blood
a. arteries c. veins
b. capillaries d. arteriole
25. The oxygen-poor blood from your legs will enter into________ and then goes to the right atrium of the
heart.
a. inferior vena cava c. superior vena cava
b. pulmonary artery d. mitral valve
26. The filtering unit of the kidney is called______.
a. nephritis c. nephron
b. ureter d. sphincter
27. You are able to think and imagine because of your___________.
a. cerebellum c. brains stem
b. cerebrum d. pons
28. The various stimuli received by the different parts of the body are sent to the brain through
the_________________.
a. nerve endings c. brain stem
b. medulla oblongata d. spinal cord
29. Which invertebrate is CORRECTLY paired to its phylum?
a. spider- nematode c. sponge- coelenterate
b. jellyfish- poriferan d. sea urchin- cucumber
30. Which group of animals fall under the Arthropods?
a. mites, bee, grasshopper, shrimp, centipedes
b. cockroach, mosquito, sea lilies, snail, scorpion
c. squid, barnacles, leech, spider, clams, crabs
d. sea cucumber, sea star, aphids, millipedes
e. mussels, earthworm, oyster, slug, butterfly
31. The following vertebrates are cold-blooded, except________.
a. reptiles c. amphibians
b. aves d. fish
32. Which example below shows parasitism?
a. snake feeds on a frog
b. fungi get their nutrition from a tree and cause plant diseases
c. bromeliads grow on trees
d. horse and goat hunt food in the same area
33. What symbiotic relationship is observed between the flower and the butterfly?
a. mutualism c. parasitism
b. commensalism d. predation
34. Which condition is favorable to spore bearing plants in order to thrive?
a. warm and dry c. warm and moist
b. dry and cold d. hot and dry

4. 35. Asexual reproduction requires___
a. two parent cells c. both sperm and egg cells
b. one parent cell d. a pair of gamete
36. Which of the following does NOT involve chemical energy?
a. hot coffee becomes cold
b. battery
c. process of photosynthesis
d. production of coal
37. Radiant energy is produced through_____
a. infrared c. ultraviolet rays
b. photon extraction d. electromagnetic waves
38. Which device is able to transform energy from mechanical to electrical?
a. washing machine c. radio
b. solar panel d. generator
39. As you move uphill, what happens to your potential energy?
a. increases c. decreases
b. constant d. reduces to half
40. Which device below contains both a wedge and a lever?
a. knife c. broom
b. nail cutter d. crowbar
41. Which does NOT apply a static friction?
a. a car parked in the garage
b. two glass bottles sit on the wooden table
c. the turbine swirls the water in the dam
d. a 50-kg vehicle stops along the school entrance
42. All objects fall on the ground at the same rate regardless of their weight in the absence of ______.
a. air resistance c. frictional force
b. potential energy d. mechanical advantage
43. Which layer of the Earth experiences convection (alternating heating and cooling of rocks)?
a. crust c. core
b. asthenosphere d. mantle
44. Mountains are formed through_____
a. divergent plate boundaries c. convergent plate boundaries
b. exothermic boundaries d. transform plate boundaries
45. When a volcano is directly connected/situated to the hotspot, surely it will become_____.
a. active c. inactive
b. dormant d. extinct
46. A certain city in the USA was devastated when an 8.9 magnitude earthquake hit leaving more than
20,000 death and 150 injured in the record last July 1905. The intensity of the earthquake as it moves
closer to the epicenter________.
a. becomes weaker c. becomes stronger
b. stays the same d. decreases

5. 47. The season between summer and winter
a. summer solstice c. winter solstice
b. spring d. autumn
48. People living in the mountains experience cooler climate due to__________.
a. high latitude c. absence of greenhouse gases
b. high altitude d. occurrence of regular precipitation
49. Which pair of planets is considered terrestrial?
a. Mars and Jupiter c. Venus and Neptune
b. Mercury and Earth d. Saturn and Jupiter
50. Which does NOT tell about a comet?
a. cosmic snowballs of ice
b. has a frozen nucleus
c. originates from Oort cloud
d. a rock with cratered irregular surface