WorksheetsUnit 2 Physical Science
Total questions: 43
Worksheet time: 2hrs 8mins
What is a fluid?
A solid substance that retains its shape
A substance that can flow and take the shape of its container
A gas that cannot change shape
A liquid that is always frozen
What happens to pressure as depth increases in a fluid?
Pressure decreases
Pressure remains the same
Pressure increases
Pressure fluctuates
What does Pascal's Principle state about pressure in a fluid?
Pressure decreases equally everywhere in a closed container.
Pressure remains constant in a closed container.
Pressure increases equally everywhere in a closed container.
Pressure only increases at the point of application.
What is buoyancy?
The downward force exerted by a fluid on an object
The upward force exerted by a fluid on an object
The sideways force exerted by a fluid on an object
The rotational force exerted by a fluid on an object
Why do some objects float while others sink?
Because of the object's color
Because of the object's temperature
Because of the buoyant force
Because of the object's shape
What does Archimedes' Principle state about the buoyant force on an object?
It is greater than the weight of the fluid displaced.
It is less than the weight of the fluid displaced.
It equals the weight of the fluid displaced.
It has no relation to the weight of the fluid displaced.
What does Archimedes' Principle help to explain?
Why airplanes fly
Why ships float and how hot air balloons work
Why cars move
Why plants grow
How can Archimedes' Principle be used to find the volume of an irregularly shaped object?
By measuring its height
By weighing it
By submerging it in water and measuring the displaced fluid
By calculating its surface area
What happens to objects that are less dense than the fluid they are in?
They sink
They float
They dissolve
They evaporate
What happens to objects that are more dense than the fluid they are in?
They float
They sink
They become gaseous
They remain suspended
What do plants use to transport water?
Buoyancy
Lift
Drag
Capillary action
What is temperature defined by?
The color of an object
The average kinetic energy of particles
The size of an object
The weight of an object
What happens to kinetic energy when the temperature increases?
It decreases
It stays the same
It increases
It disappears
What is the relationship between temperature and particle movement?
Higher temperature means less movement
Higher temperature means more movement
Lower temperature means more movement
Temperature does not affect movement
At absolute zero, what is true about the particles in a material?
They move rapidly
They have maximum kinetic energy
They are not moving
They are expanding
Which of the following is NOT a method of heat transfer?
Radiation
Conduction
Convection
Reflection
What is the transfer of thermal energy through electromagnetic waves called?
Conduction
Convection
Radiation
Reflection
Which of the following is an example of radiation?
Heat from a stove
Sunlight warming your face
Boiling water
Touching a hot pan
What is conduction?
The transfer of thermal energy through direct contact between materials.
The transfer of thermal energy through electromagnetic waves.
The transfer of thermal energy through fluid movement.
The transfer of thermal energy through sound waves.
What causes conduction to occur?
Collisions between particles.
Movement of fluids.
Emission of light.
Sound waves.
In conduction, what happens when particles with different kinetic energies collide?
Particles with higher kinetic energy transfer energy to particles with lower kinetic energy.
Particles with lower kinetic energy transfer energy to particles with higher kinetic energy.
Particles stop moving.
Particles emit light.
What is convection?
The transfer of thermal energy through the movement of fluids
The transfer of thermal energy through solid materials
The transfer of thermal energy through radiation
The transfer of thermal energy through sound waves
Why does convection occur?
Due to differences in color
Due to differences in density caused by thermal expansion and contraction
Due to differences in weight
Due to differences in shape
What makes water molecules stick to other things?
Their density
Their polarity
Their color
Their size
What property of water allows it to form droplets?
Adhesion
Cohesion
Evaporation
Condensation
Which of the following substances is likely to be hydrophilic?
Wax
Oil
Sugar
Plastic
What is a common characteristic of hydrophobic substances?
They dissolve in water.
They attract water molecules.
They repel water or don't mix with it.
They have polar areas.
What type of substances have charges that attract water molecules?
Hydrophobic
Non-polar
Hydrophilic
Neutral
Match the following properties of water.
Cohesion
Water molecules stick to each other.
Adhesion
Molecules stick to another substance.
Density
solid ice floats on liquid water.
Polarity
Hydrogen is + and oxygen is -
universal solvent
Water dissolves a lot of substances.
Which of the following is a mixture rather than a pure substance?
Air
Gold
Oxygen
Iron
What is a mixture?
A chemical reaction between two or more substances
A single substance that is chemically bonded
Two or more substances that are physically blended but are not chemically bonded together
A natural compound found in the environment
What is a heterogeneous mixture?
A mixture with a uniform composition
A mixture in which substances are not evenly mixed and have visually distinguishable components
A mixture in which substances are chemically bonded together
A pure substance with no impurities
What is a homogeneous mixture?
A mixture in which substances are unevenly mixed
A mixture in which substances are chemically bonded together
A mixture in which two or more substances are evenly mixed on the atomic level and appear uniform throughout
A mixture that changes its state of matter
What is a solution in terms of mixtures?
A heterogeneous mixture
A chemical reaction
A pure substance
A homogeneous mixture
What characteristic do homogeneous mixtures have?
They have a variable composition throughout.
They are made of only one type of atom.
They appear uniform throughout.
They are composed of elements only.
What is the term used to describe a substance that is dissolved in a solution?
Solvent
Solute
Solution
Precipitate
What do you call the substance that does the dissolving in a solution?
Solvent
Solute
Mixture
Reactant
What is the result called when a solute is dissolved in a solvent?
Mixture
Precipitate
Solution
Suspension
