DIAGNOSTIC TEST IN SCIENCE V
Choose the letter of the correct answer and write it on your answer sheet.
- Why is water a universal solvent?
- It can dissolve everything
2 It can dissolve more materials than solvents.
- It is tasteless and colorless
- It is always available in big amounts.
- 1 and 2 B. 2 and 3 C. 2 and 4 D. 1 and 4
- What happens with a spoon of dried powder juice when placed in water?
- It will dissolve B. It will change in color C. It will remain the same D. no changes
- Do all solutes dissolve in all kinds of solvents the same time?
- yes B. no C. sometimes D. never
4 . Which of the following dissolves most of the solutes?
- kerosene B. alcohol C. vinegar D. water
- We can say that a solute spreads evenly when mixed with solvents when:
- it remains suspended beneath C. it settle at the bottom
- it forms a solution D. it floats
- How heat transfer by convection best describe?
- Heat is transferred because of difference in temperature.
- Heat is transferred from molecule to molecule by contact
- Heat is transferred by a current of freely moving molecules
- Statements A and B
- Which situation shows heat transfer by convection?
- A stone under the sun becomes warm.
- The handle of a ladle becomes hot when placed over the fire
- A fire keeps people sitting around it feel warm
- A water in a pail
- Why is convection is a method of heat transfer in liquid and in gas but not in solids ?
- because the molecules of liquids and gasses are closely packed
- because molecules of liquid and gasses are freely moving
- because liquids and gasses are not made of molecules
- because the molecules floats in air
- Why did the turbine when the lighted candle is placed in the chimney below the turbine?
- The heated air rise and turned the turbine
- The cooled air rise and turned the turbine
- The heated air blew the turbine sank and turned the turbine
- The heated air sinks and rises
- In Eskimo houses made of ice blocks, warm air that comes from the bodies inside the house is trapped. The heat from these
bodies transferred to other bodies by
A . convection B. conduction C. radiation D. convection and conduction
- Study the chart below then answer the question that follow
| Date Pressure | Time | Temperature | Sky | Wind | Air |
| Oct. 1 | 2:00 p.m. | 23 C | cloudy | East | rising |
| Oct. 2 | 2:00 p.m. | 24 C | cloudy | West | rising |
| Oct. 3 | 2:00 p.m. | 31 C | Clear | West | falling |
| Oct. 4 | 2:00 p.m. | 30 C | clear | East | falling |
- Which day had the lowest temperature?
- Oct. 1 B. Oct. 3 C. Oct. 2 D. Oct 3
- 1 What can you say about air pressure when temperature was low?
- Air pressure was rising C. Air pressure was falling
- There were no air pressure D. Air pressure is sinking
- What happened to air pressure when the temperature gets higher?
- Air pressure was rising C. Air pressure was falling
- There were no air pressure D. Air pressure is sinking and rising
- Why was the temperature low when the sky was cloudy?
- Because air pressure was falling
- Because there was no air pressure
- Because clouds blocked the sun’s heat and the air pressure was rising
- Because of the clouds formation
- Which day had the highest temperature?
- Oct. 1 B. Oct. 3 C. Oct. 2 D. Oct 4
16 .How does a horse embryo are grow?
- inside the mother’s body C. outside mother’s body
- inside the mother’s pouch D. inside an eggshell
- What kind of mammal is a horse?
- marsupial B. placenta C. monotreme D. egg laying
- What type of mammal is hatched from egg?
- placental B. marsupial C. monotreme D. polytreme
- Which can affect the growth of the seed?
- kind of seed C. container seeds
- spacing of seeds D. fence around the seeds
- What will happen to the following seed not exposed to enough sunlight?
- It will still grow C. It will turn yellowish
- It will grow bigger D. It will become healthy
- Which does not affect the growth of the seed?
- air B. wind C. water D. sunlight
- Which is the breathing organ of plant in a leaf ?
- Stomata B. Lenticels C. Hypocotyls D. Chlorophyll
- Which can affect the growth of the seed?
- kind of seed C. container seeds
- spacing of seeds D. fence around the seeds
- What will happen to the following seed not exposed to enough sunlight?
- It will still grow C. It will turn yellowish
- It will grow bigger D. It will become healthy
- Which does not affect the growth of the seed?
- air B. wind C. water D. sunlight
- When you add milk, sugar and coffee to a cup of hot water, which of these explain that what you formed in a mixture?
- A new substances is formed
- You can no longer taste the sugar
- You can still taste the bitterness of the coffee, the sweetness of the sugar and the creaminess of the milk.
- Each of the part of the mixture changed in color, amount in taste
- Which of the following has the characteristic of a mixture?
- ice cream B. salt C. sugar D. rice
- Why soil is considered a mixture?
- It is a physical combination of sand fine particles of rocks and pebbles
- It is a new substance formed by sand fine particles rock and pebbles
- Soil composed only solid materials
- There is only one component of substance in soil
- Which of the following mixture can be separated by sedimentation?
- water and kerosene B. water and sand C. water and sugar D. water and alcohol
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