WorksheetsScience Quiz for Grade 4
Total questions: 40
Worksheet time: 40mins
A block of ice melts into water but still weighs the same. What does this show about matter?
Chemical change happened
Physical property changed but mass stayed the same
Matter disappeared
New substance was formed
Which is a chemical property of wood?
It has a definite shape.
It burns to produce ash and smoke.
It can be cut into pieces.
It feels rough to touch.
A student puts vinegar into baking soda and bubbles form. What property is observed?
Physical change only
Chemical reaction producing gas
No change occurred
Just a change in size
Why is rusting of iron considered a chemical change?
The shape of the metal changes only.
A new substance, rust, is formed.
The metal becomes softer.
The weight of the metal stays the same.
Which situation shows a physical property of matter?
Milk turns sour.
Paper burns to ashes.
Ice floats on water.
Iron rusts.
Which of the following is a clue that a chemical change occurred?
Change in size
Melting
Formation of bubbles or gas
Cutting into smaller pieces
A crayon is broken into two pieces. What can you conclude?
Only physical properties changed.
A chemical reaction occurred.
A new substance formed.
The crayon is no longer matter.
A student heats sugar until it turns black and gives off smoke. Why is this chemical change?
The sugar just melted.
A new substance formed that cannot be reversed.
It only changed shape.
The sugar was cooled down.
Why does water turn into ice when frozen?
The particles stop moving completely.
The particles move slower and arrange closely.
The water changes into a new substance.
The water disappears.
When a chocolate bar melts in the sun, what property of matter changed?
Color
State of matter
Chemical composition
Mass
A can of soft drink sweats on a hot day. What change is this?
Evaporation
Condensation
Sublimation
Melting
If you cut an apple into small slices, what has changed?
Mass of the apple
Size and shape of the apple
Chemical composition of the apple
The apple became another fruit
Steam forms when water boils. What does this show?
A. Liquid water changes to gas through evaporation.
B. Water is destroyed.
C. Chemical change happens.
Why does salt dissolve faster in hot water than in cold water?
Salt is lighter in hot water.
Hot water particles move faster, spreading salt quickly.
Salt chemically changes in hot water.
Cold water absorbs salt better.
Which of the following is NOT a change in physical property?
A. Tearing paper
B. Melting ice
C. Burning leaves
D. Cutting cloth
Frost forming on grass in the morning is an example of:
Freezing
Condensation
Sublimation
Deposition
If the respiratory system stops working, what will happen first?
The body cannot digest food.
The body will not get oxygen.
The body cannot pump blood.
The body temperature rises.
Which body systems work together when you eat bread?
A. Digestive and circulatory
B. Respiratory and excretory
C. Skeletal and nervous
D. Muscular and integumentary
If the circulatory system fails, which process cannot happen properly?
Carrying oxygen and nutrients to body cells
Breaking down food into nutrients
Taking in oxygen from the air
Removing waste through urine
Which system in plants transports water and minerals from the roots?
Phloem
Xylem
What do plant stomata and human lungs have in common?
Both absorb water
Both allow exchange of gases
Both transport food
Both digest nutrients
A student cuts a piece of bread and chews it. Which body systems are working together at that moment?
Digestive and nervous
Nervous and circulatory
Skeletal and muscular
Digestive and muscular
A child runs very fast and starts breathing heavily. Which systems are working harder?
Digestive and nervous
Circulatory and respiratory
Nervous and muscular
Excretory and skeletal
What is the main similarity between the human circulatory system and plant vascular system?
A. Both transport materials throughout the organism.
B. Both remove waste gases.
C. Both absorb sunlight.
D. Both produce food.
A polar bear has thick fur and fat. What can you infer about its habitat?
It lives in hot deserts.
It lives in cold icy regions.
It lives in dry forests.
It lives in wetlands.
Cactus plants have thick stems and spines. What does this adaptation tell you?
They live in areas with little water.
They need to live underwater.
They grow only in cold places.
They cannot survive in deserts.
Frogs have smooth moist skin and webbed feet. What does this show about their habitat?
They live only on land.
They can survive in both water and land.
They live in dry deserts.
They live underground only.
Which is the best explanation why fish cannot survive on land?
They cannot see outside water.
Their gills can only take in oxygen from water.
Their scales dry quickly.
They are too heavy to move.
Which characteristic helps camels survive in deserts?
Thick fur to trap cold
Long legs to run faster
Humps that store fat and water
Sharp teeth for hunting
Birds that migrate during winter show what adaptation?
They avoid predators.
They look for warmer habitats with more food.
They like to fly for fun.
They cannot survive in warm places.
If mangrove trees were removed from coastal areas, what could happen?
Fewer storms
Soil erosion and loss of habitat
More fresh water
More forests
Penguins huddle close together in the cold. What does this show about their behavior?
They are playful.
They work together to conserve heat.
They like living in groups.
They don’t like walking alone.
If a forest is cut down, what is the immediate effect on animals?
They will adapt immediately.
They will lose their habitat and food sources.
They will grow faster.
They will have more oxygen.
A pond dries up during summer. What will most likely happen to the fish?
They will fly away.
They will die without water.
They will turn into frogs.
A turtle has a hard shell. How does this help it survive in its habitat?
It makes swimming easier.
It protects the turtle from predators.
It produces food for the turtle.
It helps the turtle fly.
Which of the following best explains why different animals live in different habitats?
All animals like to travel.
Different habitats provide the food, water, and shelter they need.
Habitats are chosen by humans.
Animals do not need specific habitats.
If coral reefs are destroyed, which animals will be most affected?
Desert snakes
Marine fish and other sea animals
Forest birds
Polar bears
What adaptation helps water lilies survive in ponds?
Roots that float in air
Broad leaves that float on water surface
Spines that store water
Thick bark for protection
Which situation shows a change in habitat that may harm animals?
A river being polluted by factories
A tree growing tall in a forest
A bird building a nest
A flower blooming in spring
Which adaptation allows bats to find food at night?
Echolocation using sound waves
Sharp eyesight in sunlight
Bright-colored feathers
Long tongues for nectar
