Science 4 4th GP Reviewer

Multiple Choice

Smooth surfaces _______ a lot of light.

• reflect

• bend

• absorb

• twist

Multiple Choice

What is a prism?

• a transparent object that separates white light

• an opaque object that appears black

• a translucent object

Multiple Choice

Why do we see objects as white?

• They absorb all light

• They reflect all light

• They absorb some light and reflect some light

Multiple Choice

Another name for light bending is ....

• Reflaction

• Absorbing

• Refraction

• mirror

Multiple Choice

Refraction is

• light bending 

• light bouncing

Multiple Choice

Light is traveling as a ______.

• wave

• line

• curly

Multiple Choice

The speed of light is 4.0 x 10 m/s

• True

• False

Multiple Choice

Avoid looking directly at the sun or any bright sources of light for a long period of time.

• True

• False

Multiple Choice

Watch television too near to the screen.

• True

• False

Multiple Choice

If you are using a computer, your eyes feel a little of pain.

• True

• False

Multiple Choice

What you see from the mirror is called _____.

• image

• ghost

• monster

Multiple Choice

________ is a form of energy produce from vibrating objects.

• Light

• Heat

• Sound

Multiple Choice

_______ is the movement of object back and forth that makes sound.

• mirror

• vibration

• echo

Multiple Choice

________ is called the pitch of the sound. Lower sound ________ delivers low pitch and higher sound frequency delivers higher pitch.

• Hertz

• Sound

• Frequency

Multiple Choice

________ refers to the ability to break white light into constituent colors. White light consists of all the colors we can see.

• vacuum

• Speed of Light

• Dispersion

Multiple Choice

Light can travel through a ______-an airless space.

• vacuum

• Speed of Light

• Dispersion

Multiple Choice

Nothing travel faster than ______.

• Light

• Sound

• Heat

Multiple Choice

Light speeds through the vacuum of space almost at _______ (300,000 km) per second.

• 200, 000 miles

• 186, 282 miles

• 100, 101 miles

Multiple Choice

The speed of sound in gases is faster than in liquids.

• True

• False

Multiple Choice

The speed of sound is even faster in solids.

• True

• False

Multiple Choice

_____ is energy transit in a form of thermal energy.

• Light

• Sound

• Heat

Multiple Choice

Thermal energy is produced by continuous transfer of heat from one particle to another particle in a material.

• True

• False

Multiple Choice

Radiation is the transfer of light even in the absence of moving molecules.

• True

• False

Multiple Choice

Radiation happens when waves of radiant energy such as light, infrared, or ultraviolet travel through space.

• True

• False

Multiple Choice

Cover your ears when you hear a loud sound.

• True

• False

Multiple Choice

Loud sounds will not damage your sense of hearing.

• True

• False

Multiple Choice

Avoid using headphones at full volume to prevent ear damage.

• True

• False

Multiple Choice

In some places, noise absorbing walls are placed to reduce the sound produced.

• True

• False

Multiple Choice

20, 000 Hz above

• Infrasonic

• Sonic

• Ultrasonic

Multiple Choice

20-20, 000 Hz

• Infrasonic

• Sonic

• Ultrasonic

Multiple Choice

A very low sound that's almost not heard, but can be felt by vibration.

• Infrasonic

• Sonic

• Ultrasonic

Multiple Choice

A normal sound, the sound of a person speaking

• Infrasonic

• Sonic

• Ultrasonic

Multiple Choice

Beyond human-hearing capabilities, sounds almost nothing to humans, but can be heard by some animals.

• Infrasonic

• Sonic

• Ultrasonic

Multiple Choice

Sound made by whales

• Infrasonic

• Sonic

• Ultrasonic

Multiple Choice

Whispering

• Infrasonic

• Sonic

• Ultrasonic

Multiple Choice

This is the sound of a quiet whisper, almost no sound at all.

• 0-30 dB

• 31-50 dB

• 51-70 dB

Multiple Choice

This refers to daily or regular sounds such as those from talking people.

• 0-30 dB

• 31-50 dB

• 51-70 dB

Multiple Choice

This is like a quiet place with soft sound, like a sound of a blowing wind.

• 0-30 dB

• 31-50 dB

• 51-70 dB

Multiple Choice

This is the sound that most people will try to avoid. It can cause temporary problems in people like "stereo hiss".

• 71-90 dB

• 91-110 dB

• 111 + dB

Multiple Choice

This is the sound that becomes annoying or distracting.

• 71-90 dB

• 91-110 dB

• 111 + dB

Multiple Choice

Very Loud

• 71-90 dB

• 91-110 dB

• 111 + dB

Multiple Choice

Painful

• 71-90 dB

• 91-110 dB

• 111 + dB

Multiple Choice

Loud

• 71-90 dB

• 91-110 dB

• 111 + dB

Multiple Choice

Very Quiet

• 0-30 dB

• 31-50 dB

• 51-70 dB

Multiple Choice

Quiet

• 0-30 dB

• 31-50 dB

• 51-70 dB

Multiple Choice

Normal

• 0-30 dB

• 31-50 dB

• 51-70 dB

Multiple Choice

The methods of heat transfer are: radiation, conduction, and convection.

• True

• False

Multiple Choice

If the fire is still small, let it be.

• True

• False

Multiple Choice

Be careful when using water in putting out fire because some fire can get worse by throwing water on them. If the fire is caused by electrical wiring do not throw water on it, you can be electrocuted.

• True

• False

Multiple Choice

Be careful when using water in putting out fire because some fire can get worse by throwing water on them. If the fire is caused by electrical wiring do not throw water on it, you can be electrocuted.

• True

• False

Multiple Choice

If you caught in a building, use the electrical type of machine to escape from the fire.

• True

• False

Multiple Choice

If your clothes are on fire, RUN.

• True

• False

Multiple Choice

Be familiar with the fire exits in your home or any building you are in.

• True

• False

Multiple Choice

Stay calm.

• True

• False

Multiple Choice

What are the Different Types of Soil?

• Sand, Silt, Stone, Boulders

• Loam, Clay, Sand, Silt

• Loam, Silt, Sand, Stone

• Loam, Clay, Rock, Sand

Multiple Choice

what type of soil is good for planting?

• loam

• sand

• clay

• silt

Multiple Choice

what are the 4 layers of the soil?

• Topsoil

  Subsoil

  Parent Rock

  Bedrock

• Topsoil

  Subsoil

  Stone

  Gravel

• Topsoil

  Sand

  Silt

  Loam

• Humus

  Topsoil

  Bedrock

  Boulders

Multiple Choice

What type of soil is shown in the picture?

• Loam Soil

• Silty Soil

• Silty Loam Soil

• Sandy Soil

Multiple Choice

What type of soil is shown in the picture?

• Sandy Soil

• Sandy Loam Soil

• Silty Soil

• Loam Soil

Multiple Choice

What type of soil is shown in the picture?

• Sandy Soil

• Sandy Loam Soil

• Loam Soil

• Clay Soil

Multiple Choice

Soil has different textures. Texture is...

• a type of soil.

• how rough or smooth something is.

Multiple Choice

Which type of soil has the largest particle size?

• sand

• silt

• clay

• loam

Multiple Choice

These are soil particles. Which type of soil is circled?

• sand

• silt

• clay

• loam

Multiple Choice

The bottom layer of soil is called ______.

• topsoil

• subsoil

• bedrock

Multiple Choice

Identify the weather instrument shown in the picture.

• Anemometer

• Barometer

• Hygrometer

• Wind Vane

Multiple Choice

Identify the weather instrument shown in the picture.

• Anemometer

• Barometer

• Hygrometer

• Wind Vane

Multiple Choice

Identify the weather instrument shown in the picture.

• Anemometer

• Barometer

• Hygrometer

• Wind Vane

Multiple Choice

Identify the weather instrument shown in the picture.

• Anemometer

• Barometer

• Hygrometer

• Wind Vane

Multiple Choice

What does an anemometer measure?

• air pressure

• humidity

• wind direction

• wind speed

Multiple Choice

What does a hygrometer measure?

• air pressure

• humidity

• wind direction

• wind speed

Multiple Choice

What does a wind vane determine?

• air pressure

• humidity

• wind direction

• wind speed

Multiple Choice

What does a barometer measure?

• air pressure

• humidity

• wind direction

• wind speed

Multiple Choice

How does an anemometer spin when the wind is strong?

• fast

• slow

Multiple Choice

What is the barometer reading during a wet, stormy weather?

• high

• low

Multiple Choice

What is the hygrometer reading if the air is cool and dry?

• high

• low

Multiple Choice

If the wind is blowing from the north, in which direction will the arrow of the wind vane point?

• North

• South

• East

• West

Multiple Choice

What air pressure system is described below:

Warm moist air

Rising (upward)

Converging (Inward)

Cloudy, rainy, and stormy

• High air pressure

• Low air pressure

Multiple Choice

What air pressure system is described below:

Cold dry air

Sinking (downward)

Diverging (outward)

Calm, clear, and sunny

• High air pressure

• Low air pressure

Multiple Choice

1. This type of cloud is thin, wispy, and made of ice crystals

• cumulus cloud

• stratus cloud

• cirrus cloud

• cumulonimbus cloud

Multiple Choice

2. What type of cloud is shown?

• cumulus

• stratus

• cirrus

Multiple Choice

3. What type of cloud is shown?

• cumulus

• cirrus

• stratus

Multiple Choice

4. What type of cloud is shown?

• cirrus

• cumulus

• stratus

Multiple Choice

5. Which cloud is this?

• cumulus

• stratus

• cumulonimbus

• cirrus

Multiple Choice

6. Which cloud is this?

• cumulus

• cirrus

• stratus

• cumulonimbus

Multiple Choice

7. Clouds are made up of tiny drops of ____________ or ice. The moisture in the cloud affects the weather.

• dust

• oxygen

• water

• cotton

Multiple Choice

8. These are the highest clouds in the sky. They look white, thin and wispy. They usually mean good weather.

• Cumulus

• Stratus

• Cirrus

Multiple Choice

9. These clouds are low in the sky and look soft and fluffy. They mean fair weather.

• Cirrus

• Stratus

• Cumulus

Multiple Choice

10. What type of clouds are called "fair weather clouds" and look like floating cotton?

• Stratus

• Cumulus

• Cirrus

Multiple Choice

11. Are stratus clouds or cirrus clouds found closer to the ground?

• Cirrus

• Stratus

• Cumulus

Multiple Choice

13. These clouds are the closest to the ground. Their name means layer- or sheet like. They bring light & continuous rain or snow and cover most of the sky.

• Cirrus

• Stratus

• Cumulonimbus

• Cumulus

Multiple Choice

what weather element refers to the weight of air pressing down on us and everything on the surface of the earth. When there is a high pressure in a specific area, it indicates a fair weather. On the other hand, areas of low pressure are experiencing a bad weather.

• precipitation

• humidity

• cloud cover

• air pressure

Multiple Choice

how many weather elements are there

• 7

• 4

• 6

• 9

Multiple Choice

what happens when there is more humidity in the air

• the more likely it is for clouds to form clouds.

• it will be more cold

Multiple Choice

what do people in low pressure areas having when there is a storm

• bad weather

• good weather

• very sunny weather

Multiple Choice

what can air temperature influencce

• air pressure

• humidity

• cloud cover

• precipitation

Multiple Choice

what is used to measure wind speed

• anemometer

• rain gauge

• windometer

• wind vane

Multiple Choice

Choose the letter of the correct answer. Write your answers on a separate sheet of paper.

1. Which of the following is NOT an example of a weather condition?

• A. Flash flood

• B. rainy day

• C. sunny day

• D. windy day

Multiple Choice

2. Which of the following is NOT a safety precaution during rainy days?

• A. Avoid sun exposure: wear a wide-brimmed, breathable hat.

• B. Be ready with your umbrellas, raincoats, and rain boots during rainy days.

• C. Do not use cellphone or other electronic devices except for emergencies when thunderstorm occurs.

• D. Stay inside the house to avoid flying objects like roof materials, broken branches of trees, or falling posts.

Multiple Choice

3. Which of the following is a correct way of protecting your skin if you have to go outside on a sunny day?

• A. wear hat

• B. apply sunscreen lotion

• C. wear long-sleeved shirt and pants

• D. all of the above

Multiple Choice

5. Which of the following is NOT a preparation for a typhoon?

• A. Make a household emergency bag

• B. Visit the nearby department store and buy clothes that are in fashion.

• C. Look out for objects that could be easily swept up and picked up by gushes of wind.

• D. Ensure any leaks in the roof are repaired to prevent water from dripping into the house.

Multiple Choice

6. You walk to and from the school on a sunny day, what should you bring to shield yourself from the sun’s heat and light?

• A. boots

• B. sunglasses

• C. umbrella

• D. raincoat

Multiple Choice

8. Why do we need to follow safety precautions?

• A. to put everyone at risk

• B. to put everyone in danger

• C. to protect lives and property

• D. to put damages in properties

Multiple Choice

9. You will go swimming with your friends this weekend. What should you do to avoid sunburn?

• A. wear jacket

• B. wear sunglasses

• C. drink plenty of water

• D. apply sunscreen lotion

Multiple Choice

10. Which of the following is NOT needed in preparing an emergency bag?

• A. flashlights and batteries

• B. television and computer

• C. food and water

• D. toiletries and first aid kit