6th Grade Science 2nd Semester

A student places a large pot of cold water on a stove and heats it for one minute. Then she takes the pot of water off the burner and places it on the counter. Which best describes the convection currents? Convection currents move thermal energy from the stove to the pot, and then from the pot to the water. After the stove is turned off, convection currents continue to transfer energy through the water for a period of time. Convection currents in the water cause warmer, denser water to rise and transfer energy upward. When the stove is turned on, convection currents cause an increase in the chemical energy of water molecules.

After the stove is turned off, convection currents continue to transfer energy through the water for a period of time.

Which statements accurately describe convection in water? Check all that apply. Cold water sinks because it is less dense than warm water. Cold water sinks because it is more dense than warm water. Cold water rises because it is more dense than warm water. Warm water sinks because it is less dense than cold water. Warm water rises because it is less dense than cold water. Warm water rises because it is more dense than cold water.

Cold water sinks because it is more dense than warm water. Warm water rises because it is less dense than cold water.

Which statements best describe conduction? Check all that apply. Conduction only occurs within a substance. Conduction can occur within a substance or between two substances. Slow-moving molecules collide with fast-moving molecules. Fast-moving molecules collide with slow-moving molecules. Thermal energy is transferred from a warmer substance to a cooler substance. Thermal energy is transferred from a cooler substance to a warmer substance.

Conduction can occur within a substance or between two substances. Fast-moving molecules collide with slow-moving molecules. Thermal energy is transferred from a warmer substance to a cooler substance.

Which statements best describe convection? Check all that apply. Convection occurs in solids. Convection occurs in liquids and gases. Convection transfers thermal energy. Convection transfers potential energy. Convection occurs until all of the fluid is at the same temperature. Convection occurs only one time, no matter the temperature.

Convection occurs in liquids and gases. Convection transfers thermal energy. Convection occurs until all of the fluid is at the same temperature.

Which best describes the convection currents in Earth's mantle? They transfer potential energy away from Earth's core toward its crust. They transfer thermal energy away from Earth's core toward its crust. They transfer chemical and thermal energy in a circular pattern. They transfer chemical and potential energy in a circular pattern.

They transfer thermal energy away from Earth's core toward its crust.

How is thermal energy transferred during convection? by physical contact by electromagnetic waves by movement in fluids by mechanical waves

by movement in fluids

Which describes the motion in a convection current? horizontal motion only vertical motion only linear motion circular motion

circular motion

Where could convection currents form? in a sand dune on a pavement in the atmosphere in outer space

in the atmosphere

In which layer of Earth's interior does convection occur? crust mantle outer core inner core

mantle

Yami pours powdered cocoa mix into milk and stirs it. Then she microwaves the mixture for three minutes. When she takes the cup out, the handle is very warm. Steam rises from the cup, so she blows it before taking a sip. In which part of this scenario can convection be best observed? stirring powdered cocoa mix into milk touching the warm handle of the cup rising steam from the cup of cocoa pouring the cocoa mix into the milk

not D

Which area of Earth is most similar to the sun's convection zone? the crust the equator the mantle the poles

the mantle