WorksheetsQ1 Unit Test - Science 4
Total questions: 62
Worksheet time: 41mins
(a) is the process of taking in liquids in a gradual manner.
A material that can take
in liquids, such as water, is known to be (a) .
A material is absorbent if it is (a) . These materials are those with tiny holes that allow
liquids to pass through.
A material that cannot take in liquids is known to be (a) .
A material is nonabsorbent if it is (a) . A material does not soak up liquid due to its
smooth surface. This prevents the liquid from seeping into the material.
Porous materials allow liquids to pass through their
tiny holes.
True
False
Nonporous materials can hold off liquids.
True
False
Nonabsorbent materials cannot take in liquids.
True
False
The materials with tiny holes that allow liquids to pass through
are considered porous materials.
True
False
Nonporous materials absorb liquids, while porous materials do
not soak up liquids.
True
False
A sponge is a nonabsorbent material.
True
False
Absorption is the process of taking liquids in a gradual manner.
True
False
Cloth is an example of a porous material.
True
False
Porous materials absorb liquids.
True
False
A rubber ball is a nonabsorbent material, while cotton is an
absorbent material.
True
False
Nonporous materials do not soak up liquids because they have
smooth surfaces.
True
False
The empty spaces in the sponge allow it to swell a little and hold
the water inside it.
True
False
A material (a) if it stays on the surface of the water.
A material (a) when it goes to the
bottom after putting it in a liquid.
Some materials do not fully float or sink in water; instead,
they are (a) .
(a) is the amount of matter per occupied space. Simply, it is the object's mass
(oftentimes measured in grams, g) divided by its volume (oftentimes measured in milliliter,
mL) and is usually expressed in units of grams per milliliter (g/mL).
If the material has a higher density than water,
then it will ______.
float
sink
suspended in the middle.
If the material has a lower density than water, then it will ______.
sink
float
suspended in the middle
(a) starts when the material is exposed to sunlight, water, air, or soil over time.
Materials that come from a living thing undergo (a) .
(a) is a process in which materials slowly break down into simpler
substances. This happens in the presence of water, air, soil, and sunlight.
Materials that come from a living thing undergo (a) .
Changes in temperature, kind of materials, and the presence of decomposers are
several factors that affect the decomposition rate of a material.
True
False
The (a) is the speed at which decomposers break down a material.
Materials that decay with the help of decomposers are known as _______________ ________________.
(a)
Materials that do not easily decay are known as _____________ _____________.
(a)
Nonbiodegradable materials decay fast.
True
False
Paint and preservatives protect biodegradable materials from
decaying.
True
False
Most of the nonbiodegradable packages are made up of plastic.
True
False
Foods and vegetables do not undergo decomposition.
True
False
Placing food in the refrigerator is a way to prevent it from
spoilage.
True
False
Biodegradable materials naturally decay over time.
True
False
It is good to buy furniture made of wood because they are
nonbiodegradable.
True
False
Preservatives inside canned goods prevent the food from
spoiling.
True
False
Plastic materials take at least 100 years before they start to
decay.
True
False
Decomposition is the process by which simpler molecules are
broken down into complex ones.
True
False
What happens to a material that undergoes decay?
It is repaired into something more useful
It is slowly destroyed into tiny bits
It becomes new agian
It becomes a better version
Which of the following words is not associated to decay process?
fresh
spoilage
rotten
decompose
What is another term used to materials that undergo decay?
nonabsorbent materials
nonbiodegradable materials
biodegradable materials
absorbent materials
Which of the following materials undergo decay?
plastic
cotton
metal
rubber
Why does putting leftover food in a refrigerator slow down its decay process?
Microorganism grow fast in cold temperature
Microorganism grow slow in cold temperature
Microorganism act fast in cold temperature
Microorganism die in cold temperature
Which of the following shows a decay process?
torn, clean paper
sliced fresh fruits
soured milk
growing plant
Why does canned food do not decay easily?
It has plenty of food inside that microorganism cannot fit in it.
It has preservatives that delay the decay of food inside the can
It has cooler temperature in which microorganism cannot grow
It has warmer temperature that kills microorganism
Which of the following garbage should be thrown in a biodegradable trash bin?
soft drink can
plastic bottle
styrofoam cup
tissue paper
Your father found an unused log and made a bench from it. What should you do to prevent or slow down its decay?
Apply paint on it
Leave it under the sun
Exposed it to air, water and soil
Allows insect to stay on it
You are hungry and saw in the pantry a loaf of bread. You noticed that the bread has a blackish green patch with powdery white material on its surface? should you still eat it?
Yes, because it is still fresh
Yes, because it has added nutrients due to change in color
No, because it is beginning to rot
No, because it did not change its smell
The process in which a material decays or rots is known as decomposition.
True
False
A material that easily decays is known to be nonbiodegradable.
True
False
A material that takes a longer period to decay is known to be biodegradable.
True
False
The tiny living things that help decompose materials are called decomposer microorganism.
True
False
Lowering the temperature of an object slows down the decomposition.
True
False
The process in which wastes are grouped together before they are being
disposed of.
(a)
A food’s (a) corresponds to a certain period
of time in which they are still consumable and safe to eat.
Dairy products spoil faster in a warmer place than in a cold place.
True
False
Wastes materials that they may be returned to factories for reusing or
recycling.
(a)
(a) are irreparable appliances. These include broken
television, computer, stereo, and other electronics.
Most kitchen wastes and garden wastes are nonbiodegradable.
True
False
