PRE-TEST gen sCIE

​GENERAL SCIENCE

By Trina Cañeda

Multiple Choice

Identify scientific traits and attitudes exhibited in various situations. The students were arguing about the results of their experiment. The following were their comments:

Student A: Our conclusion is wrong. It is the opposite of what we learned in the lecture.

Student B and C: That’s what came out. After we designed the experiment and observed for two weeks, we should not change the results.

Student D: Maybe it’s good to find out why our findings differ from what was given in the lecture. Why not repeat the same experiment?

Which trait of a scientist does Student A NOT seem to have?

• A. Open-mindedness

• B. Truthfulness

• C. Blind Obedience

• D. Objectivity

Multiple Choice

Identify scientific traits and attitudes exhibited in various situations. The students were arguing about the results of their experiment. The following were their comments:

Student A: Our conclusion is wrong. It is the opposite of what we learned in the lecture.

Student B and C: That’s what came out. After we designed the experiment and observed for two weeks, we should not change the results.

Student D: Maybe it’s good to find out why our findings differ from what was given in the lecture. Why not repeat the same experiment?

Which trait of a scientist does Student A NOT seem to have?

• A. Open-mindedness

• B. Truthfulness

• C. Blind Obedience

• D. Objectivity

Multiple Choice

Student A: Our conclusion is wrong. It is the opposite of what we learned in the lecture.

Student B and C: That’s what came out. After we designed the experiment and observed for two weeks, we should not change the results.

Student D: Maybe it’s good to find out why our findings differ from what was given in the lecture. Why not repeat the same experiment? 1. Which trait of a scientist does Student A NOT seem to have?

Which trait of a scientist do Students B and C display?

• A. Objectivity

• B. Authoritativeness

• C. Truthfulness

• D. Critical Attitude

Multiple Choice

Student A: Our conclusion is wrong. It is the opposite of what we learned in the lecture.

Student B and C: That’s what came out. After we designed the experiment and observed for two weeks, we should not change the results.

Student D: Maybe it’s good to find out why our findings differ from what was given in the lecture. Why not repeat the same experiment? 1. Which trait of a scientist does Student A NOT seem to have?

Why can Student D be said to have the qualities of a scientist?

• He/She can relate to people.

• He/She is objective.

• He/She has a critical mind.

• He/She is open-minded.

Multiple Choice

Marco is always interested in asking questions. He is also very eager to find the answers to his questions. What scientific attitude is he displaying?

• Curiosity

• Rationality

• Absence of prejudice

• Wonder

Multiple Choice

Monica respects the ideas of her colleagues even if they are very much contrary to her own beliefs. What important scientific attitude is seen in her actions?

• Honesty

• Absence of prejudice

• Open-mindedness

• Acceptance

Multiple Choice

Carlito weighs evidence dutifully before making any conclusions or decisions. He analyzes the information carefully before concluding. What scientific attitude is he displaying?

• Carefulness

• Rationality

• Precision

• Accuracy

Multiple Choice

While experimenting, Mico expresses his opinions and tries new ideas even at the risk of failure or criticism. What scientific trait is displayed in this situation?

• Curiosity

• Risk-taking

• Diligence

• Absence of Ambiguity

Multiple Choice

Paul admits that he is not free from committing errors. He recognizes that there may be better ideas and realizes that there are individuals whom he may have to consult to arrive at correct observations and conclusions. What scientific trait is he displaying?

• Open-mindedness

• Objectivity

• Rationality

• Humility

Multiple Choice

While performing research for a pharmaceutical company, Melanie gave a truthful report of observations. She did not withhold important information just to please herself or her company. What scientific attitude did she display?

• Absence of bias

• Faith in God

• Intellectual honesty

• Critical mindedness

Multiple Choice

Chona actively joins group tasks and dutifully performs her assigned responsibilities. What scientific attitude is displayed in this situation?

• A. Camaraderie

• B. Responsibility

• C. Being a team player

• D. Unity

Multiple Choice

If two variables X and Y are directly related, which of these is NOT true?

• As X increases, Y also increases.

• A high Y is associated with a high X.

• When X increases, Y decreases.

• When X is low, Y also is low.

Multiple Choice

Julie wants to find out if different types of wood soak up the same amount of water when wet. She plans to do the following: I. Weigh a dry block of each type of wood. II. Put each block into a container full of water. III. Leave the wood in the water. IV. Take the wood out, dry the outside of each block, and reweigh. V. Calculate the amount of water soaked up. To be a fair test, what variables should she control?

• A. I and III

• B. III and IV

• C. I and II

• D. II and IV

Multiple Choice

Julie wants to determine if different types of wood absorb the same amount of water when wet. She plans to do the following:

I. Weigh a dry block of each type of wood.

II. Put each block into a container full of water.

III. Leave the wood in the water.

IV. Take the wood out, dry the outside of each block, and reweigh.

V. Calculate the amount of water soaked up.

In this experiment, what is the dependent variable?

• Type of wood used

• The amount of water soaked up

• Time left in the water

• Dry weight of each block

Multiple Choice

Julie wants to determine if different types of wood absorb the same amount of water when wet. She plans to do the following:

I. Weigh a dry block of each type of wood.

II. Put each block into a container full of water.

III. Leave the wood in the water.

IV. Take the wood out, dry the outside of each block, and reweigh.

V. Calculate the amount of water soaked up.

What is the independent variable?

• A. Type of wood used

• B. Dry weight of each block

• C. Amount of water soaked up

• D. Time left in water

Multiple Choice

If you were to improve on experimental design, what would you do?

I. Just focus on one independent variable at a time, e.g, brand of detergent.

II. Make use of the same type and size of fish.

III. Increase the number of fish and reduce the number of detergent brands involved.

• I and II

• II only

• I and III

• I only

Multiple Choice

You would like to know how many of your pupils have mothers and/or fathers who are presently employed as OCWs. What is/are the most reliable ways to gather data?

I. Interview the pupils

II. Give a questionnaire checklist to selected pupils.

III. Study the grades of the pupils because those performing poorly usually have parents who work as OCWs.

• I only

• I and II

• II only

• I, II, and III

Multiple Choice

Which does NOT belong?

• Conclusion

• Surmise

• Hypothesis

• Conjecture

Multiple Choice

During periods of increased global temperatures, which of the following is MOST LIKELY to occur?

• An increase in atmospheric CO2

• A decrease in atmospheric CO2

• A decrease in earthquakes

• An increase in earthquakes

Multiple Choice

Why is the Philippines much hotter than Canada? The Philippines ________________.

• receives sun rays closer to vertical position

• has more vegetation to absorb sunlight

• has days with more hours of light

• has a denser population than Canada

Multiple Choice

Geothermal energy, an energy resource in the country, is based on which phenomenon?

• A. Earth's internal heat warms its surface more than the sun does.

• B. There are concentrations of heat in some places of Earth's crust.

• C. Heat energy from the sun penetrates deep into the Earth.

• D. Human activity is the largest source of heat energy on Earth.

Multiple Choice

Which of the following is TRUE about light and seeing?

• Light hits an object, bounces, and then enters the eyes.

• Light goes out from the eyes, hits an object, and then returns to the eyes.

• Light rays coming from an object meet light coming from a light source and then enter the eyes.

• Light enters the eyes, enabling people to see objects.

Multiple Choice

Why do people feel their ears pop when they are up in an airplane?

• There are less air particles

• There are more air particles

• Air is cooler.

• Air is cleaner.

Multiple Choice

Which of the following best describes a group of cells that work together to perform a function?

• Tissue

• Organ System

• Organ

• Organism

Multiple Choice

Which among the following are duplicated during the process of mitosis?

• Centromeres

• Chromosomes

• Chloroplasts

• Centrosomes

Multiple Choice

Fungi absorb the nutrients from dead organisms. In an ecosystem, what roles do they play?

• Producers

• Carnivore

• Saprophytes

• Epiphytes

Multiple Choice

Which of the following is an example of a symbiotic relationship?

• Wolves working together to hunt in a pack.

• Plants growing in the same rolling meadow.

• Humans and their pets living in the same home.

• Weeds clinging to the roots of trees in your backyard.

Multiple Choice

Which of the following is a proper example of natural selection?

• Human beings continue to get taller because of thousands of years of proper nutrition.

• A community of ladybugs begins having offspring with darker shells to hide from their predators.

• Albino rodents die off quickly in a community, being more vulnerable to certain pancreatic diseases.

• Seagulls begin to eat so many fish that only those with dark blue scale color survive.

Multiple Choice

Vascular tissue that transports water in leaves connects directly to which of the following?

• Meristems in the root tip

• Pistils in the flower

• Root hairs in the epidermis

• Xylem in the stem

Multiple Choice

Which type of digestion occurs in the mouth when an individual chews a piece of bread?

• Mechanical digestion only

• Chemical digestion only

• Both mechanical and chemical digestion

• Neither mechanical nor chemical digestion

Multiple Choice

Which among the following gases is green in color?

• Krypton

• Neon

• Radon

• Chlorine

Multiple Choice

What does a pH below 7 indicate?

• presence of ions

• purity of the sample

• alkalinity

• acidity

Multiple Choice

Which among the following elements can be drawn into thin wires and hammered into thin sheets?

• Ag

• Na

• Cu

• Sn

Multiple Choice

What is the location on the Earth's surface that is directly above the place where an earthquake originates?

• Focus

• Epicenter

• Hypocenter

• Fault

Multiple Choice

What is the partially molten layer of the Earth called?

• Asthenosphere

• Biosphere

• Hydrosphere

• Lithosphere

Multiple Choice

What part of Earth is thought to be composed of iron and nickel?

• Hydrosphere

• Asthenosphere

• Lithosphere

• Core

Multiple Choice

What is a pyroclastic flow?

• When lava comes out of a volcanic vent.

• A mixture of volcanic gas, ash, and other tephra

• Poisonous gas of a volcano

• Lava that hardens into a batholith

Multiple Choice

What type of clouds produce thunderstorms?

• Cirrus

• Cumulonimbus

• Cumulus

• Stratus

Multiple Choice

How is oxygen released into the Earth’s atmosphere?

• Burning forests

• Photosynthetic plants

• Burning fossil fuels

• Volcanic eruptions

Multiple Choice

Before metamorphism, marble was which type of rock?

• Schist

• Rock salt

• Siltstone

• Limestone

Multiple Choice

What type of lens is used in a magnifying glass?

• Convex

• Concave

• Plane-Concave

• Plane Glass

Multiple Choice

What is the name of the point where light rays from infinity converge after passing through a lens?

• Parabola

• Center

• Focus

• Infinity

Multiple Choice

Which of the following is NOT a good heat insulator?

• Wood

• Wool

• Feathers

• Iron

Multiple Choice

When spring is released, its potential energy is converted to _____________ energy.

• D. Kinetic

• A. Thermal

• B. Sound

• C. Electrical

Multiple Choice

A car is travelling in a circle at a constant speed. Which statement is TRUE?

• The car has constant velocity but changes acceleration.

• The car has a changing velocity but constant acceleration.

• The car has a changing velocity and constant acceleration.

• The car has constant velocity and constant acceleration.

General Science

Pre-test

Multiple Choice

A rock is dropped out of the window of a moving car. At the same time, a ball is dropped from rest from the same height. Neglecting air resistance, which will reach the ground first?

• Rock will hit the ground first.

• Ball will hit the ground first.

• Both will hit at the same time.

• Neither will hit the ground.

Multiple Choice

A boy and a girl are riding on a merry-go-round that is turning at a constant rate. The boy is near the outer rim, and the girl is closer to the centre of rotation. How do the magnitudes of their accelerations compare?

• The girl’s acceleration is greater.

• The boy’s acceleration is greater.

• The boy and the girl both have zero acceleration.

• They both have the same non-zero magnitude acceleration.

Multiple Choice

A convex mirror has focal length f. An object is placed between f and 2f from the mirror. The image formed is __.

• B. virtual and reduced in size

• A. real and enlarged

• C. real and reduced in size

• D. virtual and enlarged

Multiple Choice

If you lower the frequency of a wave in a string you will ____________.

• C. increase its wavelength

• A. decrease its amplitude

• B. increase its speed

• D. decrease its wavelength

Multiple Choice

Which is the method that uses organisms to clean up toxic waste?

• Bioremediation

• Carrying capacity

• Deforestation

• Monoculture

Multiple Choice

The process of restoring mined land to its original contours and vegetation is called ____________.

• A. Reclamation

• B. Excavation

• C. Erosion

• D. Extraction

Multiple Choice

If you lower the frequency of a wave in a string you will ________.

• shorten the period

• lower its speed

• increase its wavelength

• lower its amplitude

Multiple Choice

Which is an example of a way to improve efficiency in transportation?

I. Use of fuel-efficient, hybrid, or electric cars

II. Carpooling

III. Use of public transportation

• I, II, and III

• I and II

• II and III

• I and III

Multiple Choice

According to the modern periodic law, the chemical properties of the elements are periodic friction of their ____.

• atomic weight

• isotopic weight

• atomic number

• atomic mass

Multiple Choice

The correct way of eating fruits is when they are eaten ___________________.

• with an empty stomach

• after meals

• before sleeping at night

• during snacks

Multiple Choice

Children born with a deficiency of thyroxin __________ if deficiency is not checked.

• lose their hair

• have weak bones

• grow too rapidly

• become mentally retarded