On a waterwheel, the water falls and causes the wheel to turn. What form of energy is being used to turn the wheel?

Which TWO forms of energy are most commonly used to cook food in an oven?

Which of the following statement is an example of sound energy that has electrical energy as its source?

Which object only requires mechanical energy to perform its main function?

Which object requires only mechanical AND electrical energy to perform its main function?

Energy waves bouncing off the surface of an object and returns energy back to the source.

The bending or redirection of energy waves as they pass from one substance to another.

Figure 1 demonstrates light travels in

Figure 3 demonstrates

Light travels in ________ lines.

A dark area of surface created by an object blocking light.

A material that allows SOME light to pass through it.

A form of energy we can see.

An object that separates white light into all the colors.

What form of energy does the sun give?

What form of energy is used when pushing something?

What type of energy is being used when riding a bicycle?

Which type of force resists motion?

what is it called when this happens?

when you see your face in the mirror that is an example of

An objects color is determined by the color it:

Refraction is when light...

Reflection is when light...

Which of the following is not a medium for sound to travel?

What type of energy is the following picture showing?

What type of energy is the following picture showing?

When a sound wave hits a wall and echoes back, this is an example of:

As you bounce a ball, it will not bounce back to its original height. Why?

A special mixture in which one or more substances are completely dissolved in another substance.

The transfer of heat by direct contact with the heat source.

The transfer of heat by gases or liquids.

The transfer of heat by rays, waves or particles by the sun, fire and other heat sources.

The bending of light rays as they travel from one medium into another type of medium.

A form of energy produced by the vibrations of an object or substance.

A combination of 2 or more substances that do not create something new, can see the individual parts and can be separated easily.

The process that changes water vapor (gas) back into water (liquid) water by taking away heat.

A push or a pull in a certain direction.

The process that changes (liquid) water into water vapor (gas) by adding heat.

A measure of how hot or cold an object or substance is.

A form of energy that is produced by the movement of electrons as they move from one place to another through conductors.

Materials that ALLOW electricity to flow through them easily.

Materials that DO NOT ALLOW electricity to flow through them.

A science tool that produces a magnetic field and is used to determine if certain metals are magnetic.

A force of attraction between certain metals like nickel, iron, cobalt or steel (SINC).

An electric circuit that has 2 or more pathways for electricity to flow through. If one bulb does not work, the other bulbs will continue to work.

An electrical circuit that only has 1 pathway for electricity to flow through. If one bulb is not working, the other bulbs will not work either.

A form of energy produced by the movement of electrons.

When two surfaces rub against each other. A force that works against motion.

A force that pulls objects towards each other. A force that pulls all things towards the center of the Earth.

The amount of the force of gravity pulling down on an object or substance. It is measured in Newtons and it can change depending on the size of the planet.

A form of energy that we can see and that travels in a straight line form its source.

When a solid changes into a liquid with the addition of heat.

When water vapor (gas) changes back into liquid water by taking heat away.

When liquid water changes into water vapor (gas) by adding heat.

When liquid water changes into a solid (ice).

The ability to do work or the ability to cause a change in matter.

WHAT FORCE IS BEING USED?

For an investigation a student put 100 mL of water at room temperature into each of three beakers. Then the student added a coin to Beaker R,3 g of a powdered drink mix to Beaker S, and 10 mL of lamp oil to Beaker T. The student stirred the contents of the beakers and then left them sitting on a lab table for 5 minutes. Which diagram shows what the student most likely observed in each of the beakers after 5 minutes?

Students are investigating properties of objects. They observe four objects and record observations for each object in the table. Based on the students’ observations, which of these tables properly identifies the objects?

Some people add sugar to their hot tea. Which property of the sugar remains the same when the sugar is dissolved in the tea solution?

A student stirs 15 grams of each substance listed below into 200 milliliters of water to form four different mixtures. The student then tries to separate the water from each mixture by pouring the mixture through a kitchen tea strainer. Which mixture can the student separate most easily with the strainer?

A student measured out 10 mL of four clear liquids and added one drop of a different-colored dye to each liquid. One of the liquids was water. The student then carefully poured each liquid into a graduated cylinder and let the mixture settle for 30 minutes. The student observed that the liquids had separated into layers, as shown in the diagram. Which of these procedures would help the student identify the layer of water?

Why isn't the penny attracted to the magnet?

Which uses mechanical energy?

Lisa went to the library. She checked out three books and added them to her book bag. What will happen to the amount of force needed to lift her book bag?

To move the heavy box shown, Kylie and her friends lifted it onto a cart with wheels. Why was it easier to move the box by placing it on wheels than by sliding it?

During summer break, Cathy spent many days playing different sports. In one week, she went bowling, played soccer, softball, and beach volleyball. Cathy felt that moving the bowling ball required the most force. Why would it require more force?

Felipe and Marsha were studying friction and decided to do an experiment. They place four equally sized blocks made of different materials on an elevated plastic tray. They watched the blocks move down the tray. Which block would experience the least amount of friction as it moved down the tray?

Give an example of an unbalanced force.

Why is it harder for the boy in Image B to get down the hill?