WorksheetsBM
Total questions: 23
Worksheet time: 15mins
Common table salt, NaCl, is used to season and preserve food. What is table salt?
compound
element
solution
mixture
A small beaker contains 300 mL of water at 20°C. A large beaker contains 300 mL of water at 60°C. A student places the small beaker in the large beaker and allows this setup to stand undisturbed for a few hours. The temperature of the water in each beaker is then measured.
Assuming that the temperature of the room where the beakers are has no effect on the movement of the energy between the fluids in the beakers, which of the following demonstrates the way thermal energy moves in this experiment?
Water in the small beaker is 40°C, while water in the large beaker is also 40°C.
Water in the small beaker is 20°C, while water in the large beaker is 60°C.
Water in the small beaker is 10°C, while water in the large beaker is 70°C.
Water in the small beaker is 0°C, while water in the large beaker is 80°C.
A glass jar holds 100 mL of water at 75°C (167°F). A metal spoon at 23°C (73°F) is placed into the water. What will most likely happen after they are in contact for five minutes?
The temperature of the spoon will decrease as thermal energy flows into the water.
The temperature of the water will decrease as thermal energy flows into the spoon.
The temperature of the water and spoon will remain the same as no thermal energy is transferred.
The temperature of the water and spoon will both increase as thermal energy transfers between them.
Which of the following best describes a situation that would result in convection?
Putting a metal spoon in a mug of hot water
Leaving a glass of ice in the sun
Turning on an air conditioner in a hot room
Turning on an electrical current
A student was given the volume and description of a substance and was asked to determine its density. What information is missing?
size
mass
boiling point
melting point
What is a common advantage of nuclear, wind, hydroelectricity, and solar energy?
All four energy sources produce no carbon dioxide.
All four energy sources are renewable.
All four energy sources require limited facilities to produce electricity.
All four energy sources are reliable, having no fluctuations in production.
When the Sun heats one region in an ocean, the movement of the water in the ocean circulates the heat. What is this called?
Radiation
Conduction
Convection
Absorption
Which of the following is an advantage of using wind turbines to generate energy for a city?
Wind turbines are quiet and improve scenic areas.
Wind turbines are suitable for any location in the country.
Wind turbines require little space and produce continuous power.
Wind turbines do not emit carbon dioxide and do not require sunshine.
When it is cold outside, wearing a coat prevents —
conduction, the transfer of heat from a person's body to the atoms in the air.
convection, the transfer of heat through empty space.
radiation, the transfer of heat to fluids, such as water vapor in the air.
radiation, the transfer of heat in circular a pattern from the person's body to the air.
When ice is put in lemonade, the temperature of the lemonade decreases because —
heat transfers from the ice to the lemonade through conduction.
cold transfers from the ice to the lemonade through convection.
heat transfers from the lemonade to the ice through conduction.
cold transfers from the lemonade to the ice through convection.
All of the following are advantages of using solar energy EXCEPT —
it is a form of continuous power.
it has zero carbon dioxide emissions.
it is a renewable energy source.
it reduces the dependence on fossil fuels.
What kind of energy transformation is taking place when a hair dryer is used?
Mechanical energy is being transformed into thermal energy.
Electrical energy is being transformed into thermal energy.
Sound energy is being transformed into electrical energy.
Magnetic energy is being transformed into wind energy.
Why are there multiple pulleys in a boom vang pulley system?
To maintain the direction of the force from the mainsail, only
To reduce and change the direction of the force from the mainsail
To increase and change the direction of the force from the mainsail
To change the direction of the force from the mainsail, only
In order to power an elevator, a motor must convert electrical energy into which other type of energy?
Mechanical Energy
Thermal Energy
Nuclear Energy
Light Energy
Which is true about an object being pulled behind a person?
It moves at the same speed as the person, but it moves in a different direction.
It moves faster than the person, and it moves in the same direction.
It moves slower than the person, and it moves in a different direction.
It moves at the same speed, and it moves in the same direction as the person.
Manuel pushed a toy truck down a shallow ramp and onto four different surfaces, measuring the distance that the truck traveled on each surface. On which surface were the forces on the truck the least balanced?
Bath towel
Wood floor
Sandy Beach
Gravel driveway
The potential energy of an object is —
dependent on its shape
dependent on its volume
dependent on its position
dependent on temperature
Minerals can be identified using hardness, streak, and cleavage because
minerals are inorganic.
crystal structure is too hard to determine.
crystal size is determined by the environment.
minerals have different recognizable properties.
The kinetic and potential energies of an object both always depend on which property?
Mass of the object
Volume of the object
Relative position of the object
Gravitational force on the object
Diamonds are sometimes used as the tips of drill bits. Which physical property of a diamond MOST likely makes it a good cutting tool?
its electrical properties
its thermal properties
its hardness
its density
Metalloids such as tellurium and germanium tend to —
be poor conductors of electricity
have semi conductivity
conduct heat very well
not conduct heat
A student observes a substance that is highly reflective and able to conduct electricity. The substance also has a high melting point. Which is the most likely classification for this substance?
salt
glass
metal
plastic
Elements —
are made of compounds with different properties
can be broken down into different types of atoms
can combine into compounds with new properties
only combine with other elements of the same type
