Use the drop-down menus to complete the passage about a flask of water heating on a hot plate: Which type of heat transfer can be seen as heat moves from the hot plate through the glass flask?

Use the drop-down menus to complete the passage about a flask of water heating on a hot plate: Which type of heat transfer can be seen by holding a hand over the hot plate and feeling warmth without touching it?

In the cross-section of an insulated bottle filled with hot coffee, several arrows labeled W, X, Y, and Z show possible paths for heat transfer. What type of heat transfer is indicated by arrow W inside the liquid where circulation is shown?

In the cross-section of an insulated bottle filled with hot coffee, several arrows labeled W, X, Y, and Z show possible paths for heat transfer. What type of heat transfer is indicated by arrow X moving through the side wall of the bottle?

In the cross-section of an insulated bottle filled with hot coffee, several arrows labeled W, X, Y, and Z show possible paths for heat transfer. What type of heat transfer is indicated by arrow Y at the base of the bottle?

In the cross-section of an insulated bottle filled with hot coffee, several arrows labeled W, X, Y, and Z show possible paths for heat transfer. What type of heat transfer is indicated by arrow Z shown as wavy lines leaving the top opening?

Sort each statement into TRUE or FALSE: Materials containing air are usually good insulators.

Sort each statement into TRUE or FALSE: Metals are not good conductors of heat.

Sort each statement into TRUE or FALSE: Heat is transferred between objects when they have a difference in temperature.

Sort each statement into TRUE or FALSE: A substance that does not conduct heat well is an insulator.

Sort each statement into TRUE or FALSE: A spoon is sticking out of a cup of hot coffee. The spoon will be hot to touch.

Sort each statement into TRUE or FALSE: Materials containing air are usually good insulators.

Sort each statement into TRUE or FALSE: Heat travels from warmer to colder places.

Sort each statement into TRUE or FALSE: Metals are not good conductors of heat.

Sort each statement into TRUE or FALSE: The metal lid on a jelly jar is stuck. Running cold water over the lid will help to get it off.

Sort each statement into TRUE or FALSE: White cars absorb less heat than black cars.

Sort each statement into TRUE or FALSE: A substance that does not conduct heat well is an insulator.

Sort each statement into TRUE or FALSE: Oven mitts are good insulators because they are usually made of cloth.

Sort each statement into TRUE or FALSE: A metal lid is stuck on a jar of pizza sauce. Running hot water over the lid will help to get it off.

Sort each statement into TRUE or FALSE: Heat is transferred between objects when they have a difference in temperature.

Sort each statement into TRUE or FALSE: A spoon is sticking out of a cup of hot coffee. The spoon will be hot to touch.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Electromagnetic waves transfer energy through space to Earth.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Heat energy on Earth escapes into space.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Warm air in atmosphere rises and is replaced by cooler air.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Flow of heat energy through liquids and gases.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Transfer of heat through soil by the contact of molecules.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Heat energy transferred.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Touching; direct contact.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Moves from warmer to cooler.

How does the heat move through the space between the Sun and the Earth? Select the heat transfer mechanism that matches: Responsible for weather patterns on Earth.

During induction, a positively charged rod is brought near to but not touching the electroscope. The presence of the charged object above the plate of the electroscope induces charges to move up towards the conduction plate, giving the gold leaves an overall positive charge. The positive leaves repel. Describe the force(s) at work.

This is a kind of electroscope student made in science class to study charges. Student Procedure: Tear off two pieces of tape, each 4 inches (10 cm) long. Press each piece firmly on the work table leaving one end of each tape piece sticking up as a handle. Quickly pull the tapes from the table and stick one piece on the arm of a straw in one film canister, and the other piece on the arm of a straw in the other film canister. Move the canisters so the two pieces of tape are face to face, about 6 inches apart. Slowly move the canisters closer together. This experiment illustrates several important facts about forces that include ALL BUT ONE of those listed here.

Gravity is a force that attracts objects toward each other. Anything with mass has a gravitational pull. While everyday objects like tables and chairs have mass, their masses are not large enough to have significant amounts of gravitational force. Effects of gravity are more obvious when observing massive objects like planets and moons. Think about how gravity affects massive objects in the solar system. Choose THREE correct statements about the effects of gravity of Earth, the moon, and within space.

Choose which force is at work in this device: a door catch or latch on a kitchen cabinet.

Choose which force is at work in this device: two socks stuck together coming out of a clothes dryer.

Choose which force is at work in this device: a directional compass.

The Earth has a magnetic field, as seen in the image. The field lines defining the structure of the magnetic field are similar to those of a simple bar magnet. The origin of the Earth's magnetic field is not completely understood, but is thought to be associated with electrical currents produced by the coupling of convective effects and rotation in the spinning liquid metallic outer core of iron and nickel. Based on this information, check all three statements that are true.

Magnetic fields are areas where an object exhibits a magnetic influence. Identify the images that represent magnetic fields. Check each image that is correct: Image A shows Earth surrounded by looping field lines; Image B shows two electromagnets labeled N and S with lines between them.

Movement of Charge. During this experiment, a positively charged rod is brought near but not touching the electroscope. The presence of the charged object above the plate of the electroscope induces charges to move down into the gold leaves, giving the electroscope an overall positive charge. The positive leaves repel. Which statement(s) below are key to explaining why the plate at the top of the electroscope contains negative charges? I. Like charges repel. II. Opposite charges attract. III. Metals are good conductors. IV. Attractive forces decreases with distance.

The students continued their experiments with charge and electrostatics. Joe and Lashonda each blew up a balloon and then rubbed their dry hair with the inflated balloons. While they did this, the other students noticed that their hair was starting to stick straight out. Next, they tied a string to their balloons and let them dangle next to each other. Predict what will happen.

Drag and drop the terms to correctly complete the prompt: Current is produced in a conductor when it is moved through a ______ because the magnetic lines of force are applying a force on the free electrons in the conductor and causing them to move. This process of generating current in a conductor by placing the conductor in a changing magnetic field is called induction. There is no physical connection between the conductor and the magnet. The conductor, which is often a piece of wire, must be perpendicular to the magnetic lines of force in order to produce the maximum force on the free electrons. Which term correctly completes the blank after “moved through a” in the first sentence?

In the statement “because the magnetic lines of force are applying a force on the ______ in the conductor,” which term from the word bank correctly completes the blank?

In the statement “and causing them to ______,” which term from the word bank correctly completes the blank?

In the sentence “This process of generating current in a conductor by placing the conductor in a changing magnetic field is called ______,” which term correctly completes the blank?

In the sentence “There is no ______ between the conductor and the magnet,” which term correctly completes the blank?

In the sentence “The conductor, which is often a piece of wire, must be ______ to the magnetic lines of force,” which term correctly completes the blank?

Place the types of surfaces in order, starting with the lowest friction and ending with the highest. Which option shows the correct order?

Classify the item as a conductor or an insulator of electricity: foam

Classify the item as a conductor or an insulator of electricity: air

Classify the item as a conductor or an insulator of electricity: soil

Classify the item as a conductor or an insulator of electricity: plastic

Classify the item as a conductor or an insulator of electricity: glass

Classify the item as a conductor or an insulator of electricity: ocean water

Classify the item as a conductor or an insulator of electricity: aluminum foil

Classify the item as a conductor or an insulator of electricity: wood

A positively charged ball is placed an equal distance between two charged objects, Object 1 and Object 2. In which case will the positively charged ball move toward Object 2? Options refer to the four panels labeled A, B, C, and D that show Object 1 and Object 2 as circles marked with plus or minus signs indicating charge: A both objects show plus signs; B Object 1 shows minus signs and Object 2 shows plus signs; C Object 1 shows plus signs and Object 2 shows minus signs; D both objects show minus signs.

This diagram shows a negatively charged balloon. When the charged balloon is brought near some pieces of paper, the papers are attracted to the balloon. Which describes the charging of the pieces of paper?

The diagram shows the inside of a Van de Graaff generator. A net charge can be built up on the generator’s sphere. A moving belt removes charged particles from the sphere and deposits them on the brush. Charged particles flow freely over the surface of the sphere, but do not move on the belt. The generator could be made from which of the following?

Four students are investigating how a positively charged steel sphere affects how the charges of two touching steel spheres are distributed. Each student creates a diagram as a hypothesis. Which student’s diagram correctly predicts the distribution of charges?

Positive and negative charges are attracted to one another. The phenomenon of static electricity requires a separation of positive and negative charges. Laundry in a clothes dryer often becomes charged with static electricity while drying. Which of these best explains why a clothes dryer often generates static electricity?

Which statement best explains why laundry becomes charged in a dryer?

Select the correct item from the bank that matches the description: This is a strong, short-lived magnet created by a looped electrical current.

Select the correct item from the bank that matches the description: A force of attraction/repulsion due to the spin of electrons.

Select the correct item from the bank that matches the description: This is a machine that will convert mechanical, nuclear, or chemical energy into electrical energy.

Select the correct item from the bank that matches the description: A propagating wave in space with electric and magnetic components that oscillate at right angles and may travel in a vacuum.

Select the correct item from the bank that matches the description: This is a net gain or loss of electrons.

Select the correct item from the bank that matches the description: This is a machine that converts electrical energy into mechanical energy.

Select the correct item from the bank that matches the description: This is a flow of electrons that creates a charge, one of the fundamental forms of energy.

In the Venn diagram comparing an electromagnet and a bar magnet, which category does the label "Attracts iron" belong to?

In the Venn diagram comparing an electromagnet and a bar magnet, which category does the label "Requires electricity to work" belong to?

In the Venn diagram comparing an electromagnet and a bar magnet, which category does the label "Always works" belong to?

In the Venn diagram comparing an electromagnet and a bar magnet, which category does the label "Usually one solid piece" belong to?

In the Venn diagram comparing an electromagnet and a bar magnet, which category does the label "Normally made of several parts: wire, battery, nail" belong to?

In the Venn diagram comparing an electromagnet and a bar magnet, which category does the label "Core is nickel, cobalt, or iron" belong to?

Based on the image and description of an electric generator, which statement is correct? The generator uses a moving fluid to turn a turbine, and the turbine turns coils of copper wire surrounded by permanent magnets to create electricity.

Which of the following variations would increase electrical output? (choose 2)