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WorksheetsFIRST QUARTERLY EXAMINATION - S.Y. 2025-2026 GRADE 4 - SCIENCE
Total questions: 100
Worksheet time: 50mins
A scientist is someone who:
plays games
studies and explores the natural world
only reads books
watches TV
An inventor is someone who:
discovers existing things
creates new products or devices
only studies
plays sports
Thomas Edison invented the:
airplane
electric light bulb
telephone
car
Alexander Graham Bell invented the:
light bulb
telephone
airplane
computer
The Wright Brothers invented the:
car
airplane
boat
bicycle
6. Marie Curie was a scientist who studied:
Physics and Chemistry
Astronomy
Biology
Mathematics
Filipino inventor Agapito Flores is credited with:
the jeepney
the fluorescent lamp
the computer
the airplane
Fe del Mundo was a Filipino doctor known for:
pediatrics and inventions for children's health
astronomy
engineering
farming
Scientists use _____ to answer questions:
guessing
the scientific method
magic
luck
Inventions help us by:
making life easier
solving problems
improving our lives
all of the above
The invention of the wheel helped with:
transportation
carrying heavy loads
both a and b
nothing
The computer has changed our lives by:
making communication faster
helping us work and learn
storing information
all of the above
Medical inventions like vaccines help:
make us sick
prevent diseases
nothing
hurt people
The refrigerator helps us:
cook food
keep food fresh longer
heat food
throw away food
Modern farming inventions help:
reduce crop production
increase food production
destroy farms
nothing
A physical change:
creates new substances
changes the form but not the identity of matter
cannot be reversed
always produces gas
A chemical change:
is easily reversed
creates new substances with different properties
only changes shape
only changes size
Which is a physical change?
rusting of iron
melting ice
burning wood
cooking an egg
Which is a chemical change?
cutting paper
freezing water
rusting of a nail
breaking glass
When wood burns, it is a:
a) physical change
b) chemical change
c) no change
d) reversible change
Dissolving sugar in water is a:
a) chemical change
b) physical change
c) cannot happen
d) both
Cooking an egg is a:
a) physical change
b) chemical change
c) no change
d) easily reversed
Signs of a chemical change include:
color change
gas production (bubbles)
heat or light production
all of the above
When vinegar and baking soda mix, you see:
nothing
bubbles (gas) - a chemical change
only color change
it freezes
When iron rusts, it:
stays the same
turns reddish-brown (chemical change)
melts
evaporates
Burning produces:
heat and light
new substances (ash, smoke)
both a and b (chemical change)
nothing
Food spoiling is a:
a) physical change
b) chemical change
c) no change
d) good thing
Photosynthesis in plants is a:
physical change
chemical change where plants make food
no change
bad change
Digesting food in our body is a:
a) physical change only
b) chemical change
c) no change
d) reversible
Making a cake involves:
only physical changes
only mixing
chemical changes (baking changes ingredients)
no changes
To prevent rusting of iron, we can:
leave it in water
paint it or apply oil
break it
burn it
Food can be preserved by:
refrigeration
canning
drying
all of the above
We should wear sunscreen to protect from:
rain
harmful UV rays from the sun
wind
cold
To prevent food from spoiling, we should:
leave it outside
store it properly (refrigerate or cover)
expose it to heat
not eat it
Galvanizing is:
a) a type of dance
b) coating iron with zinc to prevent rust
c) burning things
d) breaking things
We wear helmets when riding bikes to:
look cool
protect our heads from injury
make us faster
keep warm
Harmful chemicals should be:
drunk
stored safely away from children
played with
left open
Fire extinguishers are used to:
start fires
put out fires safely
cook food
heat homes
Wearing gloves when handling chemicals protects:
nothing
your hands from harm
the chemicals
your feet
Smoke detectors help protect us from:
rain
fire hazards by alerting us
cold
nothing
Pollution is:
good for environment
harmful substances in air, water, or land
clean air
fresh water
Air pollution is caused by:
smoke from vehicles and factories
burning trash
both a and b
clean air
Water pollution can be caused by:
garbage in rivers
chemical waste
oil spills
all of the above
Deforestation means:
planting trees
cutting down forests
protecting forests
growing forests
We can reduce pollution by:
throwing garbage everywhere
using less plastic and recycling
burning more trash
wasting water
The 3Rs stand for:
Read, Run, Rest
Reduce, Reuse, Recycle
Red, Round, Rectangle
Rice, Rat, River
Planting trees helps:
increase pollution
produce oxygen and reduce pollution
destroy environment
nothing
We should save water by:
leaving faucets running
taking shorter showers and fixing leaks
wasting it
not using it
Climate change is caused by:
too much clean air
greenhouse gases and pollution
planting trees
saving energy
We can help the environment by:
littering
conserving resources and reducing waste
polluting
cutting all trees
The skeletal system is made up of:
muscles
bones
blood
nerves
The skeletal system:
pumps blood
supports and protects the body
digests food
breathes air
How many bones does an adult human have?
100
206
300
500
The muscular system:
helps us move
works with bones
both a and b
does nothing
The circulatory system:
breaks down food
transports blood, oxygen, and nutrients
helps us breathe
helps us think
The heart is part of the:
digestive system
circulatory system
skeletal system
respiratory system
The respiratory system helps us:
eat
breathe and get oxygen
move
think
The lungs are part of the:
digestive system
respiratory system
skeletal system
muscular system
The digestive system:
breaks down food for energy
helps us breathe
pumps blood
helps us move
60. Digestion begins in the:
stomach
mouth
intestines
heart
The stomach:
breathes air
breaks down food with acids
pumps blood
makes bones strong
The small intestine:
stores waste
absorbs nutrients from food
breathes air
pumps blood
The large intestine:
absorbs nutrients
absorbs water and stores waste
digests food
pumps blood
The brain is part of the:
digestive system
nervous system
circulatory system
skeletal system
The nervous system:
a) controls body functions and sends messages
b) digests food
c) breathes air
d) pumps blood
The brain, spinal cord, and nerves make up the:
muscular system
nervous system
digestive system
respiratory system
To keep your skeletal system healthy, you should:
drink milk (calcium) and exercise
never move
eat junk food only
stay in bed all day
To keep your muscles strong, you should:
never exercise
exercise regularly and eat protein
sleep all day
not move
To keep your heart healthy, you should:
exercise and eat healthy foods
eat lots of junk food
never move
smoke
To keep your digestive system healthy, you should:
eat fiber, fruits, and vegetables
drink water
both a and b
eat only candy
The shoot system of a plant includes:
roots
stem, leaves, flowers, fruits
soil
water
The stem:
supports the plant
transports water and nutrients
both a and b
does nothing
Leaves help plants:
make food through photosynthesis
absorb sunlight
both a and b
dig in soil
Photosynthesis is:
plants eating insects
plants making food using sunlight, water, and CO₂
plants sleeping
plants growing roots
Chlorophyll is:
red color in leaves
green pigment that helps capture sunlight
water in leaves
air in leaves
Flowers are important for:
plant reproduction
making the plant pretty
both a and b
nothing
Fruits develop from:
roots
flowers after pollination
stems
soil
The root system:
grows above ground
grows underground
flies in air
floats on water
Roots help plants by:
absorbing water and nutrients from soil
anchoring the plant
storing food
all of the above
Two types of root systems are:
taproot and fibrous roots
big and small
red and green
round and square
A taproot is:
many small roots
one main thick root
no roots
flying roots
Fibrous roots are:
one main root
many thin, branching roots
no roots
roots in air
Carrots and radishes have:
fibrous roots
taproots
no roots
aerial roots
Grass and rice have:
taproot system
fibrous root system
no roots
flying roots
Root hairs help:
make the plant pretty
increase surface area for water absorption
flowers bloom
nothing
A habitat is:
a house
the natural home of plants and animals
a school
a store
Different habitats include:
forest, ocean, desert
grassland, wetland
both a and b
only cities
Animals in the ocean have adaptations like:
gills for breathing underwater
fins for swimming
both a and b
fur
Desert animals have adaptations like:
thick fur for cold
ways to conserve water
gills
fins
Plants in the desert often have:
large leaves
thick stems to store water and spines
no roots
need lots of water
Animals that eat only plants are called:
carnivores
herbivores
omnivores
predators
Animals that eat only meat are called:
herbivores
carnivores
omnivores
producers
Animals that eat both plants and animals are:
herbivores
carnivores
omnivores
producers
Examples of herbivores include:
a) cow, rabbit, deer
b) lion, tiger
c) snake, eagle
d) shark, crocodile
Examples of carnivores include:
cow, goat
lion, eagle, snake
rabbit, deer
chicken, duck
A food chain shows:
how animals play
how energy flows from one organism to another
where animals sleep
how animals run
Producers in a food chain are:
animals that hunt
plants that make their own food
animals that eat meat
decomposers
Consumers are:
organisms that eat other organisms
only plants
only fungi
soil
A simple food chain is:
grass → grasshopper → bird → snake
snake → bird → grasshopper → grass
bird → snake → grass → grasshopper
random order
Decomposers like fungi and bacteria:
produce food
break down dead organisms
eat only plants
eat only animals
