Question 1

Respiration refers to the exchange of oxygen and carbon dioxide in the body. Which part of the respiratory system does exchange of gases take place?

Accepted Answer

Alveoli

Answer

Bronchioles

Answer

Bronchi

Answer

Trachea

Question 2

When swallowing, which structure closes to prevent food from entering the respiratory passage?

Accepted Answer

Epiglottis

Answer

Trachea

Answer

Diaphragm

Answer

Esophagus

Question 3

Which process DOES NOT occur in the nasal cavity?

Accepted Answer

Exchange of gases

Answer

Warming of inhaled air

Answer

Humidification of inhaled air

Answer

Trapping of large foreign bodies

Question 4

Which of the following is the function of cilia that line the walls of air passages?

Accepted Answer

clean the inspired air

Answer

move the inspired air to the alveoli

Answer

moisten the expired air

Answer

move the expired air to the nasal cavity

Question 5

Which blood vessel carries carbon dioxide-rich blood to the heart?

Accepted Answer

Vein

Answer

Capillaries

Answer

Arteries

Answer

Septum

Question 6

Which of the following refers to a hollow muscular organ, about the size of a fist and located at the center of the chest cavity between lungs?

Accepted Answer

Heart

Answer

Trachea

Answer

Liver

Answer

Kidney

Question 7

Heart is a four-chambered structure separated by valves and septum. Which chamber is responsible for pumping the blood out to the body system?

Accepted Answer

Left ventricle

Answer

Right Ventricle

Answer

Right Atrium

Answer

Left Atrium

Question 8

Circulatory and respiratory systems are linked with each other. Which statement BEST describes that they work together?

Accepted Answer

The heart pumps oxygenated blood from the lungs to the body, and deoxygenated blood is carried back to the lungs.

Answer

The heart pumps oxygenated blood from the lungs to the body, and oxygenated blood is carried back to the lungs.

Answer

The heart pumps deoxygenated blood from the lungs to the body, and oxygenated blood is carried back to the lungs.

Answer

A. The heart pumps deoxygenated blood from the lung to the body, and deoxygenated blood is carried back to the lungs.

Question 9

Asthma occurs when the bronchial tubes that carry air in and out of the lungs are swollen. What are the possible symptoms that may be experienced when having this condition?

Accepted Answer

.Having shortness of breath.

Answer

Having pain in the diaphragm

Answer

Having abdominal pain

Answer

Having a very high fever.

Question 10

Elsa has been a chain smoker for 5 years; this made her complain of chest pain, shortness of breath, nausea, weakness, and dizziness. Which of the following diseases would perfectly fit her symptoms?

Accepted Answer

Coronary Heart Disease

Answer

Emphysema

Answer

Bronchitis

Answer

Stroke

Question 11

Nitrogen belongs to Group 5 and has 5 valence electrons. Neon belongs to Group 8. How many valence electrons does Neon have?

Accepted Answer

None

Answer

5

Answer

8

Answer

2

Question 12

Which of the following statements correctly describes valence electrons?

Accepted Answer

These are the electrons that are in the outermost energy level.

Answer

These are the electrons that move to higher energy levels.

Answer

These are the electrons that are in the innermost shell.

Answer

These are the electrons that can be found in the nucleus of an atom.

Question 13

Iron(Fe) has an electron configuration of 1s² 2s²2p⁶3s²3p⁶ 4s² 3d⁶. At which configuration will you find the valence electron of Iron?

Accepted Answer

4s2

Answer

A.       3s2

Answer

3d6

Answer

3p6

Question 14

Which of the following describes the elements found in Group IA?

Accepted Answer

These elements have low electronegativity.

Answer

These elements are nonmetals.

Answer

These elements have high ionization energy.

Answer

These elements can form covalent bond.

Question 15

Going from left to right across a period, except metalloids, ionization energy of the elements _________________.

Accepted Answer

increases

Answer

decreases

Answer

multiplied by two

Answer

diminished

Question 16

Which of the following statements about electronegativities of metals and nonmetalsis CORRECT?

Accepted Answer

Elements with high electronegativities (nonmetals) often gain electrons to form anions.

Answer

Elements with high electronegativities (nonmetals) often gain electrons to form cations.

Answer

Elements with low electronegativities (metals) often lose electrons to form anions.

Answer

Elements with low electronegativities (metals) often gain electrons to form cations.

Question 17

Which of the following statements correctly describes the electronegativity of Magnesium? Why?

Accepted Answer

Magnesium has a weak attraction for electrons in a chemical bond because it has a low electronegativity.

Answer

Magnesium has a weak attraction for electrons in a chemical bond because it has zero electronegativity.

Answer

Magnesium has a strong attraction for electrons in a chemical bond because it has a low electronegativity.

Answer

Magnesium has a strong attraction for electrons in a chemical bond because it has a high electronegativity.

Question 18

Order the elements in decreasing ionization energy. Na, S, Al, F, K, O.

Accepted Answer

F, O, S,Al Na. K

Answer

Al, O, K, F, S,Na

Answer

K, Na, Al, S, O, F

Answer

Na, S, F, K, O Al

Question 19

Which of the following best explains why ionization energy decreases down a group?

Accepted Answer

Ionization energy decreases because electrons are further away and require less energy to remove.

Answer

None of the above

Answer

Ionization energy decreases because electrons are closer and require more energy to remove.

Answer

Ionization energy increases because electrons are closer to the nucleus

Question 20

Which of the following best explains why ionization energy decreases down a group?

Accepted Answer

Calcium Carbonate

Answer

Calcium carbide

Answer

Calcium tricarbonate

Answer

Calcium Trioxide

Question 21

Which of the following land features is defined as an opening on the Earth’s surface by which hot molten rocks and gaseous materials come out?

Accepted Answer

Volcano

Answer

Trench

Answer

Caldera

Answer

Fault

Question 22

Which of the following statements differ cinder cone volcano from composite or stratovolcano?

Accepted Answer

Cinder cone volcano has steep slope while composite volcano has nearly perfect slope.

Answer

Cinder cone volcano is slightly domed shape while composite has alternate solidification of lava.

Answer

Composite volcano is ejected from lava fragments while cinder cone volcano is formed by less viscous basaltic lava.

Answer

Composite cinder cone volcanoes have both wide craters.

Question 23

A Philippine volcano that spewed out huge amount of ash and had a greater effect in our country last June 1991.

Accepted Answer

Mount Pinatubo

Answer

Mount Kanlaon

Answer

Mount Mayon

Answer

Taal Volcano

Question 24

What type of volcano is considered dead and not expected to erupt?

Accepted Answer

Extinct Volcano

Answer

Potentially Active Volcano

Answer

Active Volcano

Answer

Dormant Volcano

Question 25

Based on the recorded history of eruption, what classification of volcano that hasn’t erupted in the past 10,000 years but expected to erupt again?

Accepted Answer

Active Volcano

Answer

Dormant Volcano

Answer

Extinct Volcano

Answer

Strato Volcano

Question 26

Which of the following statements differentiate active volcano from in active volcano?

Accepted Answer

Active volcano has records of eruption, while inactive volcano does not have a record of eruption.

Answer

Both volcanoes have few records of eruptions.

Answer

Active volcano doesn’t have a record of eruptions, while inactive volcano has records of eruption.

Answer

Active volcano has records of eruptions, while inactive volcano has few records of eruption.

Question 27

What is the other term for a dormant volcano?

Accepted Answer

Inactive Volcano

Answer

Extinct Volcano

Answer

Tectonic Volcano

Answer

Active Volcano

Question 28

Our country has active volcanoes which were already erupted. Which of the following volcanoes are active?

Accepted Answer

Mayon and Kanlaon

Answer

Naujan and Smith

Answer

Talisay Caldera

Answer

Arayat and Lake Bunot

Question 29

Why does number of gases contain in a magma affects its viscosity?

Accepted Answer

Because the gas dissolved in the magma tends to increase its ability to flow.

Answer

Because the composition of magma affects its viscosity.

Answer

Because the pressure affects the viscosity of the magma.

Answer

Because higher the temperature of the magma, the lower its viscosity.

Question 30

Volcanic gases are ejected from the volcanoes. Which of the following gases DOES NOT contribute greatest potential hazards to people, animals, and agriculture?

Accepted Answer

Ammonia

Answer

Hydrogen fluoride

Answer

Sulfur dioxide

Answer

Carbon dioxide

Question 31

Safety gears and equipment are important when playing sports. Which is NOT an importance of these equipment?

Accepted Answer

To increase the kinetic energy that can cause you injury or pain

Answer

To prevent and lessen the impact of sports-related injuries

Answer

To reduce the impact when the ball hit your body

Answer

To secure safety while playing sports

Question 32

Basketball is one of the sports most played here in the Philippines. Which of the following should be done when playing basketball?

Accepted Answer

Wear knee pads when playing the game.

Answer

Push your opponent to get the ball.

Answer

Run as fast as you can to leave your opponents behind.

Answer

Wear slippers so that you can run faster than your opponent.

Question 33

From the table given below, which of the following girls did more work than the other?

Accepted Answer

Jem

Answer

April

Answer

Cass

Answer

Elaine

Question 34

What cannot happen to energy according to the law of conservation of energy?

Accepted Answer

Energy cannot be created.

Answer

Energy cannot be transformed.

Answer

Energy cannot be converted

Answer

Energy cannot be changed.

Question 35

As the cars of rollercoaster race down the hill, energy transformations take place. Which of the following is true?

Accepted Answer

Some potential energy is transformed to kinetic energy and other forms of energy.

Answer

Some energy is destroyed as the car slows down.

Answer

The kinetic energy of the cars is equal to the potential energy of the cars.

Answer

Kinetic energy is stored in the cars as they move down the hill.

Question 36

Energy cannot be created or destroyed. Which statement about energy is correct?

Accepted Answer

Energy can change form, but energy can never change intotal amount.

Answer

A little energy is lost every time an energy transformation occurs.

Answer

Because of the conservation of energy, it is possible to have a machine that would never need energy.

Answer

Conservation of energy occurs only when some of the energy is converted to light.

Question 37

Which of the following forms of energy is considered a potential energy?

Accepted Answer

sound energy

Answer

chemical energy

Answer

thermal energy

Answer

radiant energy

Question 38

Which of the following is a form of energy associated with an object’s motion?

Accepted Answer

thermal energy

Answer

radiant energy

Answer

chemical energy

Answer

sound energy

Question 39

How can you increase the potential energy of a diver in the Olympics?

Accepted Answer

go to a higher diving board

Answer

work out and lose weight

Answer

jump

Answer

go to a lower diving board

Question 40

An elevator with a mass of 2800 kg is lifted to a height of 2.8 m. What is the potential energy of the system?

Accepted Answer

1.45 x 10⁵ J

Answer

8.05 x 10⁴ J

Answer

7.68 x 10⁴ J

Answer

18 x10⁵ J

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