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WorksheetsScience Concepts for Grade 4
Total questions: 20
Worksheet time: 10mins
What is absorbency?
Absorbency is the capacity of a material to soak up liquid.
Absorbency is the ability to repel water.
Absorbency refers to the weight of a material.
Absorbency is the speed at which a liquid evaporates.
Which material is most absorbent: sponge, plastic, or metal?
sponge
rubber
wood
glass
How do you measure the mass of an object?
Weigh the object using a ruler.
Use a balance scale or digital scale to measure the mass.
Use a thermometer to measure the mass.
Estimate the mass by its volume.
If a rock weighs 200 grams, what is its mass?
200 milliliters
150 grams
200 grams
250 grams
What is density?
Density is mass per unit volume.
Density is the volume of an object divided by its mass.
Density is the temperature of a substance.
Density is the weight of an object.
How do you calculate density?
Density = Volume / Mass
Density = Mass - Volume
Density = Mass + Volume
Density = Mass / Volume
If an object has a mass of 50 grams and a volume of 10 cm³, what is its density?
10 g/cm³
2 g/cm³
0.5 g/cm³
5 g/cm³
What happens to an object with a density less than water?
The object will evaporate.
The object will sink.
The object will float.
The object will dissolve in water.
What does it mean for an object to float?
An object floats when its density is less than the density of the fluid it is in.
An object floats when it is submerged completely in water.
An object floats when it is heavier than the fluid.
An object floats when it is made of rubber.
What does it mean for an object to sink?
An object sinks when it is denser than the fluid it is in.
An object sinks when it is filled with air.
An object sinks when it is the same density as the fluid it is in.
An object sinks when it is lighter than the fluid it is in.
Why do some objects float while others sink?
Objects float if their density is less than the fluid's density; they sink if their density is greater.
Objects float because they are lighter than air.
Objects sink due to their color being darker than the fluid.
Objects float if they are made of plastic.
What is buoyancy?
Buoyancy is the force that pulls objects down in water.
Buoyancy is the upward force that allows objects to float in a fluid.
Buoyancy is the weight of an object in a fluid.
Buoyancy is the resistance of a fluid against an object.
How does a submarine float?
A submarine floats by relying on its propellers.
A submarine floats by adjusting its buoyancy using ballast tanks.
A submarine floats by using solar panels.
A submarine floats by filling its hull with air.
What happens to a submarine when it takes in water?
The submarine becomes faster due to added weight.
The submarine sinks due to increased weight and decreased buoyancy.
The submarine remains at the same depth regardless of water intake.
The submarine rises due to increased buoyancy.
What is the relationship between mass and volume in determining density?
Density is determined by the ratio of mass to volume.
Density is the total mass of an object.
Density is the sum of mass and volume.
Volume is independent of mass in density calculations.
If an object is less dense than water, will it float or sink?
It will dissolve in water.
It will sink.
It will float.
It will remain suspended in water.
What is the formula for calculating volume?
V = surface area × depth
V = perimeter × height
V = length × width
V = base area × height
How can you test the absorbency of different materials?
Soak the materials in oil and measure the weight change.
Use a hairdryer to dry the materials and time the process.
Pour a measured amount of water on each material and measure absorption time or remaining water.
Place the materials in a freezer and check for ice formation.
Why is it important to understand density in science?
Density is only relevant in physics, not in chemistry.
Understanding density is unnecessary for studying gases.
Density has no impact on the properties of liquids.
It is important to understand density in science because it affects how substances behave and interact.
How can you demonstrate that air can affect buoyancy?
Air increases the density of objects in water.
Buoyancy is only affected by temperature, not air.
Air affects buoyancy by providing lift to objects that are less dense than the fluid they are in, such as a balloon floating in water.
Air has no effect on buoyancy in liquids.
