Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Pattern of stars in the sky is called constellation. The total number of constellation is 88. Twelve of them are located along the ecliptic; they are called zodiac. Which of the following constellations is one of the “signs of the Zodiac”?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
A pendulum is hanging on the rope. If the pendulum needs 2 seconds to move from A to B. Calculate the period of the pendulum.
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
A neutral balloon has mass. If a neutral balloon rubs against your hair several times, what will happen to its mass?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
A current-carrying wire is placed near a horseshoe magnet. The wire is deflected up (see figure below).
a. Explain why such a phenomenon occurs.
b. If the direction of current is reversed, what will happen?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Look at the following circuit.
If the object is
a. a piece of wood, what will happen to the bulb? Why?
b. a copper coin, what will happen to the bulb? Why?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Two bars are connected to each other by a rope through a pulley as shown below. The incline is most slippery and no friction between pulley and the rope.
What will happen if the bar A is heavier than the B?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Which planet(s) that is/are never occulted (blocked) by the full moon? Explain your answer using a simple diagram.
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Figure below shows water levels in a measuring glass before and after a piece of wood of 100 g is put into the water.
a) Calculate the density of wood, if only half of the wood sinks into the water? (2 Points)
b) If we use oil instead of water and the density of oil is 0.9 times smaller than the water, how high will the level of oil increase if you drop the wood to the oil? Give your reason. (2 Points)
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
An iron ball with positive charge +Q is hanging with a thin string as shown in the diagram below.
At the beginning, the ball and the needle are at rest. If we swing the ball, then what will happen to the needle?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
A person is standing near a wall.
If he shouted “Hello” and his echo is heard in 0.1 second, how far is the wall from the person? (the speed of sound in the air is 340 m/s)
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
An astronaut is on the way from the Earth to the Moon. He saw the angular diameter of the Moon as 6 degrees. If the linear diameter of the Moon is 3500 km, what is the distance of the Moon from the astronaut at that time?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Answer the question 12–14 based on the following paragraph.
Plant loses water through the leaves by transpiration. An experiment was set up to measure the loss of water from the leaves. Prior to the experiment, pot and soil were covered using the plastic bag, as shown in the picture. Loss of water from plant could be regularly measured by weighing the potted plant.
When does the plant lose the most amount of water during the day?
At noon. It is due to the highest temperature and maximum light intensity of the sun.
At noon. It is due to the highest temperature and humidity at that time.
At noon. It is due to the highest humidity and maximum light intensity of the sun.
In the morning. It is due to the lowest temperature and humidity
In the morning. It is due to the sun and temperature start to rise
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Answer the question 12–14 based on the following paragraph.
Plant loses water through the leaves by transpiration. An experiment was set up to measure the loss of water from the leaves. Prior to the experiment, pot and soil were covered using the plastic bag, as shown in the picture. Loss of water from plant could be regularly measured by weighing the potted plant.
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Answer the question 12–14 based on the following paragraph.
Plant loses water through the leaves by transpiration. An experiment was set up to measure the loss of water from the leaves. Prior to the experiment, pot and soil were covered using the plastic bag, as shown in the picture. Loss of water from plant could be regularly measured by weighing the potted plant.
What will happen if all the leaf surfaces were covered by clear plastic?
The plant will die due to the lack of oxygen needed for their respiration.
The transpiration will be disturbed due to the decline of pores needed for gas exchange.
The plant will die because less water enters the plant.
The photosynthesis will be affected because the clear plastic will prevent the sunlight from reaching the leaves
The plant will die because the accumulation of carbon dioxide in leaves is toxic for plant.
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Which of the following statements are true?
Roots always form a fibrous system that holds the soil.
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
What is the name of an organ indicated by letter A in the following picture?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Look at the following figure.
The following organisms involved in the fresh water ecosystem, shown in the figure.
(1) Rice
(2) Water plant
(3) Zooplankton
(4) Small fish
(5) Grasshopper
(6) White egret
(7) Swamp birds
(8) Duck
(9) Soil rat
(10) Paddy field rat
(11) Sparrow
(12) Owl
Which one of the following statements indicates the correct food chain?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Overuse of pesticide can cause some of the following events:
1. The plants die
2. Most of the targeted pests die
3. Soil organisms die
4. Plants may grow rapidly
5. Pests become resistant to pesticide
6. Soil microorganisms grow rapidly
Which of the following sets of statements is true?
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Look at the following picture. Answer problem numbers 19–20 based on the picture.
Identify the part labeled “i” and state its function.
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
Look at the following picture. Answer problem numbers 19–20 based on the picture.
Identify the part labeled “f” and state its function.
