WorksheetsGrade 4 Science Quiz Bee (Set H to L)
Total questions: 127
Worksheet time: 21mins
Which change is a PHYSICAL change?
Butter melting on warm toast
Wood burning in a fire
Iron rusting
Egg frying
The MAIN function of flowers in most plants is to:
Absorb water
Make food
Help the plant reproduce (make seeds/fruit)
Hold the plant upright
Which instrument measures AIR PRESSURE?
Rain gauge
Thermometer
Barometer
Anemometer
Which material is TRANSLUCENT?
Wax paper
Clear glass
Aluminum foil
Cardboard
Earth's main source of HEAT and LIGHT is the:
Moon
Sun
Flashlight
Volcano
Which method can separate OIL floating on WATER?
Filtration
Sieving
Decantation (carefully pouring off)
Using a magnet
Which tool is a type of LEVER?
Crowbar
Pulley
Ramp
Wheel
Which is a CONSUMER in an ecosystem?
Mango tree
Grass
Cat
Seaweed
Which form of energy lets us SEE objects?
Sound energy
Light energy
Heat energy
Chemical energy
Which is a good ELECTRICAL CONDUCTOR?
Rubber band
Dry wood
Aluminum foil
Plastic spoon
Which organism is a DECOMPOSER?
Mushroom
Goat
Rice plant
Hawk
Two identical bulbs are connected in PARALLEL to one battery. If one bulb burns out, the other will:
Go off
Stay on with about the same brightness
Get dimmer
Explode
Best way to separate a DRY mixture of sugar and sand to recover sugar crystals:
Use a magnet
Add water to dissolve sugar → filter out sand → evaporate water
Decant the top layer
Use a sieve only
TEMPERATURE data (°C): Mon 29, Tue 31, Wed 30, Thu 28, Fri 32. Which day was the COOLEST?
Monday
Tuesday
Thursday
Friday
What mainly causes the SEASONS (basic idea)?
Earth's rotation in 24 hours
Earth's tilted axis as it REVOLVES around the Sun
Moon's phases
Random weather
Which material is the BEST INSULATOR for hot soup?
Thin metal cup
Foam/Styrofoam cup
Glass beaker
Ceramic bowl
Shortening a guitar string (same tension) makes the pitch:
Lower
Higher
The same
Stop
Which is a CHEMICAL change?
Ice cream melting
Water boiling
Vinegar reacting with baking soda (bubbles)
Paper tearing
Which device converts CHEMICAL energy to ELECTRICAL energy?
Battery
Light bulb
Fan
Pulley
Which organ absorbs MOST WATER from food?
Mouth
Stomach
Small intestine
Large intestine
To lift a heavy rock with a lever using LESS effort, you should place the fulcrum:
Farther from the rock
Closer to the rock (load)
Exactly in the middle
It doesn't matter
RAINFALL (mm): Mon 4, Tue 0, Wed 6, Thu 3, Fri 7. What is the TOTAL rainfall?
18 mm
19 mm
20 mm
21 mm
Shadows are SHORTEST at:
Sunrise
Noon
Sunset
Midnight
Which safety rule is BEST when plugging/unplugging appliances?
Pull the cord hard
Use dry hands and hold the plug, not the cord
Stand on a wet floor
Touch exposed wires
Which process in plants mainly RELEASES water vapor to the air?
Respiration
Transpiration
Germination
Pollination
A mixture contains sawdust, oil, and water. Which sequence BEST separates them?
Filter to remove sawdust → decant oil from water
Use a magnet → evaporate water → filter
Evaporate first → filter → use a magnet
Freeze the oil then filter
Three identical bulbs are connected in SERIES to a battery. Compared with one bulb alone, EACH bulb is:
Brighter
About the same
Dimmer
Off
AVERAGE TEMPERATURE (°C) for 5 days: 30, 31, 29, 32, 28. What is the average?
30°C
30.5°C
31°C
29.5°C
A coin looks BIGGER at the bottom of a glass of water because of:
Reflection only
Refraction (light bends and objects look closer/larger)
Diffraction
Absorption
To loosen a tight nut with a wrench using the SAME force, the BEST way is to:
Use a shorter handle
Use a longer handle
Hold closer to the nut
Push straight down on the nut
In a food web, if producers decrease greatly, what MOST LIKELY happens to herbivores?
Increase
Decrease
No change
Become carnivores
A hot metal rod cools in air. The MAIN heat transfer to surrounding air is:
Conduction in air only
Convection (warm air rises) and radiation
Radiation only
Insulation
The Moon is HALF-LIT to our view. This phase is called:
New Moon
Full Moon
Quarter (First or Last Quarter)
Crescent
Which statement about Earth's MOTIONS is TRUE?
One ROTATION takes about 24 hours (day/night); one REVOLUTION around the Sun takes about 365 days (a year).
One rotation takes a year; one revolution takes a day.
Both rotation and revolution take the same time.
Rotation causes seasons.
Which mixture is a UNIFORM solution?
Soil
Salt dissolved in water
Salad
Rice and beans
TEMPERATURES were 26°C at 7 AM, 35°C at 1 PM, and 30°C at 7 PM. Between which times did temperature INCREASE the most?
7 AM to 1 PM
1 PM to 7 PM
No change
7 PM to 7 AM
Adding a second battery in SERIES to a bulb will usually make the bulb:
Dimmer
Brighter
Go off
The same
Which material will make the DARKEST shadow?
Transparent plastic
Translucent paper
Opaque cardboard
Clear glass
Which energy transformation BEST describes an ELECTRIC FAN?
Electrical → mechanical (motion) + sound
Chemical → electrical
Light → chemical
Mechanical → electrical
Which set of conditions makes EVAPORATION happen the FASTEST?
Low temperature, still air, small surface area
High temperature, moving air, large surface area
Covered container, low temperature
Shade, still air, small surface area
To use a LEVER with LESS effort, you should:
Use a shorter handle
Place the fulcrum far from the load
Use a longer handle or place the fulcrum closer to the load
Remove the fulcrum
In a simple food web, if many BIRDS disappear, what MOST LIKELY happens to caterpillars?
Decrease
Increase
No change
Become producers
Two identical BATTERIES are connected in PARALLEL to one bulb. Compared to using a single battery, the bulb is:
Much brighter
About the same brightness but runs longer
Dimmer
Off
Which situation shows REFRACTION of light?
Shadow on a wall
Image in a mirror
A pencil looking bent in water
Light blocked by a book
Which change is EASILY reversible?
Chocolate melting
Paper burning
Egg frying
Iron rusting
Which instrument measures HUMIDITY?
Thermometer
Barometer
Hygrometer
Rain gauge
Animals that eat only meat are called:
Herbivores
Carnivores
Omnivores
Decomposers
Which material is TRANSPARENT?
Wax paper
Clear plastic wrap
Cardboard
Aluminum foil
What causes DAY and NIGHT on Earth?
Earth's rotation on its axis
Earth's revolution around the Sun
Moon's phases
Clouds moving
Which object is MAGNETIC?
Steel paper clip
Rubber eraser
Aluminum can
Wooden stick
Which mixture is BEST separated by EVAPORATION?
Salt dissolved in water
Sand and water
Oil and water
Rice and stones
A seesaw is an example of a:
Pulley
Lever
Inclined plane
Wheel and axle
In which plant part does MOST photosynthesis occur?
Roots
Leaves
Stems
Flowers
Which device mainly converts ELECTRICAL energy to LIGHT?
Electric fan
Light bulb
Toaster
Bicycle
Which is the correct order of the WATER CYCLE?
Evaporation → Condensation → Precipitation → Collection
Condensation → Evaporation → Collection → Precipitation
Precipitation → Collection → Condensation → Evaporation
Collection → Precipitation → Evaporation → Condensation
Which setup will dissolve sugar FASTEST?
Cold water, no stirring, large crystals
Warm water, stirring, powdered sugar
Cold water, stirring, large crystals
Warm water, no stirring, large crystals
Two identical bulbs are connected to one battery. In which connection is EACH bulb brighter?
Series
Parallel
Neither lights
They are equal
Which is the BEST INSULATOR for a plug handle?
Copper
Rubber
Aluminum
Steel
In the chain mango tree → caterpillar → bird → snake → eagle, the SECONDARY consumer is the:
Caterpillar
Bird
Snake
Eagle
Best way to clear MUDDY water for observation:
Filtration
Sieving
Magnetism
Evaporation
Shadows are usually LONGEST during:
Noon
Late afternoon or early morning
Midnight
Any time-same length
Which Moon phase is a thin curved sliver?
Full Moon
Crescent
Gibbous
Quarter
Which is the SAFEST way to unplug an appliance?
Pull the cord with wet hands
Hold the plug with dry hands
Touch exposed wires first
Stand on a wet floor
TEMPERATURE (°C): Mon 27, Tue 30, Wed 31, Thu 29, Fri 28. Which day was HOTTEST?
Monday
Tuesday
Wednesday
Friday
Which object is a WHEEL AND AXLE?
Door knob
Ramp
Scissors
Pulley
RAINFALL (mm): Mon 2, Tue 8, Wed 0, Thu 5, Fri 10. What is the TOTAL rainfall?
23 mm
24 mm
25 mm
26 mm
Which statement about FRICTION is TRUE?
It always speeds things up
It can help us walk without slipping
It creates energy from nothing
It has no effect on motion
Which statement about CIRCUITS is CORRECT?
Open circuit lets current flow
Closed circuit is a broken path
Closed circuit lets current flow
No difference between open and closed
Best practice during an earthquake inside a classroom:
Run outside immediately
Drop, Cover, and Hold On
Stand near windows
Use the elevator
A dry mixture contains iron filings, sawdust, sand, and salt. Which sequence BEST separates ALL of them?
Use a magnet → add water to dissolve salt → skim off floating sawdust → filter sand → evaporate water
Add water first → evaporate → use magnet → skim
Filter first → use magnet → evaporate → add water
Use a magnet → filter → evaporate → add water
Two identical bulbs are connected in PARALLEL. If one burns out, the other will:
Go off
Stay on with about the same brightness
Get much brighter
Explode
At 6 AM the temperature is 24°C. At 1 PM it is 33°C. At 6 PM it is 28°C. What is the change from 6 AM to 6 PM?
+9°C
+4°C
−5°C
0°C
Which setup will dry wet clothes the FASTEST?
Cool, still air; small surface area
Warm, moving air; large surface area
Covered container; cool room
Shade; still air; small surface area
Which energy transformation happens in a SOLAR GARDEN LAMP?
Chemical → electrical → light
Light → electrical → chemical (battery) → electrical → light
Mechanical → electrical → heat
Electrical → chemical → light
Which change MOSTLY explains why a BLACK T‑shirt feels hotter than a white one under sunlight?
Black reflects more radiation
Black absorbs more radiant energy
Black makes heat chemically
White absorbs more than black
Average rainfall for 5 days (mm): 4, 12, 6, 0, 8. What is the AVERAGE?
4 mm
5 mm
6 mm
7 mm
Which statement about HEAT TRANSFER best explains how hot soup cools on a table?
Only conduction in air
Convection in air and radiation from the soup surface
Only radiation
Only conduction through the bowl
In a food web, if the number of HAWKS decreases, snakes that hawks prey on will MOST LIKELY:
Increase
Decrease
Stay the same
Become producers
Which phenomenon makes a pencil look BENT in water?
Reflection
Refraction
Diffraction
Absorption
Which method BEST recovers SALT from seawater?
Filtration
Decantation
Evaporation
Magnetism
A CLOSED switch in a simple circuit will:
Stop the current
Complete the circuit so current flows
Reduce the battery's voltage
Break the bulb
Which material is TRANSLUCENT?
Clear plastic wrap
Frosted glass
Cardboard
Aluminum foil
In the chain grass → rabbit → snake → eagle, the RABBIT is the:
Producer
Primary consumer
Secondary consumer
Tertiary consumer
A FIXED pulley mainly helps because it:
Reduces the load's weight
Creates extra energy
Changes the direction of force
Removes all friction
On which surface will a toy car roll the SHORTEST distance (most friction)?
Smooth tile
Polished wood
Glass
Carpet
Plucking a guitar string HARDER makes the sound:
Softer
Louder
Lower pitch
Disappear
Which container keeps a COLD drink cold the LONGEST?
Thin metal cup
Foam/insulated tumbler
Paper cup
Ceramic saucer
To keep bulbs ON even if one burns out, connect them in:
Series
Parallel
With the switch OFF
Without a battery
Shadows at NOON are usually:
Longest
Shortest
Same all day
Invisible outdoors
ONE year on Earth is caused by Earth's:
Rotation on its axis
Revolution around the Sun
Tilt changing daily
Distance from the Moon
The MAIN function of STOMATA in leaves is to:
Store food
Absorb water
Allow gas exchange (CO₂ in; O₂, water vapor out)
Anchor the plant
Which instrument measures WIND SPEED?
Barometer
Anemometer
Hygrometer
Rain gauge
TEMPERATURE (°C): Mon 31, Tue 29, Wed 32, Thu 30, Fri 33. Which day was HOTTEST?
Monday
Wednesday
Thursday
Friday
A mixture contains iron filings, sand, and salt. Which sequence BEST separates all three?
Add water → filter → use magnet → evaporate
Use a magnet → add water to dissolve salt → filter → evaporate water
Filter first → use a magnet → add water → evaporate
Use a magnet → evaporate → filter → add water
Adding a second battery in SERIES to a bulb will usually make the bulb:
Dimmer
Brighter
Go off
The same
A metal spoon in hot soup becomes hot by:
Conduction
Convection
Radiation only
Insulation
Which situation shows REFRACTION of light?
Shadow forming on a wall
Image in a mirror
A pencil looking bent in water
Light blocked by a book
What mainly causes the SEASONS (basic idea)?
Earth's rotation in 24 hours
Earth's tilted axis as it revolves around the Sun
Moon's phases
Random weather changes
RAINFALL (mm): Mon 4, Tue 6, Wed 0, Thu 10, Fri 5. What is the AVERAGE rainfall for the week?
4 mm
5 mm
6 mm
7 mm
To use a LEVER with LESS effort, you should:
Use a shorter handle
Place the fulcrum closer to the load or use a longer handle
Place the fulcrum far from the load
Remove the fulcrum
Increasing the TENSION of a guitar string will usually make the pitch:
Lower
Higher
The same
Stop completely
Two identical BULBS in PARALLEL compared with one bulb alone: EACH bulb's brightness is:
Much dimmer
About the same brightness (battery drains faster or lasts shorter)
Zero
Double
Which energy transformation happens in a SOLAR CALCULATOR?
Electrical → light
Light → electrical
Chemical → electrical → light
Mechanical → electrical
Which change is a CHEMICAL change?
Ice melting
Cutting paper
Cooking rice
Dissolving sugar
Which instrument measures RAINFALL?
Anemometer
Thermometer
Rain gauge
Barometer
Which material is an INSULATOR of electricity?
Copper wire
Steel nail
Aluminum foil
Rubber eraser
Which state of matter has NO fixed shape and NO fixed volume?
Solid
Liquid
Gas
All of the above
Which separation method uses a MESH to sort by particle size?
Magnetism
Sieving
Decantation
Evaporation
Which organism is a DECOMPOSER?
Mango tree
Mushroom
Goat
Hawk
Which surface is OPAQUE?
Clear glass
Frosted glass
Cardboard
Thin plastic wrap
Earth's ROTATION mainly causes:
A year
Day and night
Seasons
Moon phases
Which simple machine is the BLADE of an axe?
Lever
Wheel and axle
Wedge
Pulley
Which statement about MAGNET POLES is TRUE?
Like poles attract
Unlike poles attract
All poles attract
Magnets attract everything
Which is the CORRECT order of the water cycle?
Evaporation → Condensation → Precipitation → Collection
Condensation → Evaporation → Collection → Precipitation
Precipitation → Collection → Evaporation → Condensation
Collection → Precipitation → Evaporation → Condensation
Best way to recover SALT from saltwater:
Filtration
Evaporation
Decantation
Magnetism
Two identical bulbs are connected to the same battery. In which connection is EACH bulb brighter?
Series
Parallel
Neither lights
Equal brightness
Which material is the BEST heat INSULATOR for hot soup?
Thin metal cup
Foam cup
Glass beaker
Ceramic bowl
A fixed pulley helps mainly by:
Reducing the object's weight
Changing the direction of force
Creating extra energy
Removing all friction
Which pair is a SOLUTION (uniform)?
Oil + water
Sand + water
Sugar + water
Flour + beans
TEMPERATURE (°C): 6 AM 24; 12 NN 33; 6 PM 29. The BIGGEST increase is between:
6 AM → 12 NN
12 NN → 6 PM
Same increase
No change
Which cloud type is THIN and feathery, high in the sky?
Cumulus
Stratus
Cirrus
Cumulonimbus
Shadows are LONGEST at:
Noon
Sunrise or sunset
Midnight
Early afternoon
Which organ is the MAIN pump of the circulatory system?
Lungs
Heart
Stomach
Kidneys
Which action REDUCES friction the most?
Add oil/grease
Press surfaces harder
Use rougher surfaces
Increase the load
In the food chain grass → grasshopper → frog → snake, the FROG is the:
Producer
Primary consumer
Secondary consumer
Tertiary consumer
Which is the SAFEST way to unplug an appliance?
Pull the cord hard
Hold the plug with DRY hands
Stand on a wet floor
Touch exposed wires first
Which mixture can be separated BEST by MAGNET?
Pins and sand
Salt and water
Oil and water
Sugar and water
