Water vapor changes to liquid water during

which process?

Identify the heat-transfer process represented by the arrows in the diagram.

If the temperature of the water in cup A continues to decrease as shown on the graph, what will the

approximate temperature of the water in cup A be at the end of 25 minutes?

If the aluminum bar were shorter, the cool water in cup B would increase in temperature at a faster rate

because

Magnets A and B are of equal magnetic strength. In which position will magnets A and B have the greatest attractive force toward each other?

The diagram shows four identical magnets that have been dipped into piles of shavings of four different metals.

What conclusion can be made about a magnet’s ability to attract metals based on what is shown in this diagram?

Scientists have created trains that use magnets to

make the trains float above the tracks as they

travel. These trains float because

The diagram represents a bar magnet. When iron filings were placed near the magnet, they moved

to form the pattern shown.

Why more iron filings are located at the ends of the magnet than at the center of the magnet?

Plastic is used to cover the copper wires in the

power cords of appliances because plastic differs

from copper in

The diagram shows a game where players try to move a metal needle through three metal paper clips without letting the needle touch the clips. A bulb lights when the needle touches a paper clip, signaling that the player has lost.

Why does the bulb light when the needle touches a paper clip?

When a balloon is rubbed on a wool sweater, the balloon builds up a negative electrical charge. When a

glass rod is rubbed on silk, the rod builds up a positive electrical charge. Why will the charged balloon

will be attracted to the charged glass rod.

Because copper is a metal, it is

Sound waves are not able to travel through

The diagram shows two magnets.

If the magnets are brought closer together, they will

Which form of energy is produced when a rubber

band vibrates?

The picture shows a ringing bell inside a vacuum jar.

As air is pumped from the vacuum jar, the sound level of the ringing bell will decrease until it can no longer be heard. This happens because air must be present in the jar in order for

When placed in direct sunlight, which object will absorb the most visible light energy?

Which statement best describes the property of light waves illustrated in the diagram?

The drawings represent four different forms of electromagnetic energy.

Which diagram represents electromagnetic energy with the shortest wavelength?

The diagram shows a light ray.

In this diagram, the light ray is being

The picture shows a bird landing at a bird feeder outside a window.

The image of this bird in the window is the result of light being

The diagram shows the relative wavelengths for several types of electromagnetic energy.

Which type of electromagnetic energy has a shorter wavelength than ultraviolet waves?

The diagram shows a boy observing a fish located at position B below the surface of the water. The boy sees the fish at position A. The apparent position of the fish is different from the actual position of the fish. What has happened to the light passing through the water to cause this difference?

Sound will not travel in a

The table shows the chemical symbols for some common elements.

Based on the information in the table, which of the four substances below is a compound?

Some common substances and their chemical formulas are listed in the chart. Which of these substances are elements?

The elements fluorine, chlorine, bromine, and iodine are all found in the same group (17) on the table. These elements are grouped together because they

Water (H₂O) is not found on the Periodic Table of the Elements because water is

A student added some sugar to a glass of water,

but it did not dissolve quickly. What could the

student do to increase the rate at which the

sugar dissolves in the water?

Base your answers on the model of a water molecule and on your knowledge of science.

What does this model represent?

Base your answers on the model of a water molecule and on your knowledge of science.

Hydrogen and oxygen are classified as

The diagram represents a sodium atom bonding to a chlorine atom to form sodium chloride.

Which statement is supported by this diagram?

The tiny particles that make up all matter are

called

The diagram shows the formation of two water molecules.

How many atoms combined to form the two water molecules?

Which graph correctly shows the effect of heat energy on the motion of molecules of matter?

Water vapor changes to liquid water during

which process?

A Calorie is a unit used to measure

Which process results in the formation of water

on the outside of a cold glass of iced tea on a

warm day?

Warm air rising in the atmosphere is an example

of heat being transferred by

The diagram represents a thermometer.

Which principle best explains how this

thermometer works?

A portion of the Periodic Table of the Elements is shown, a student constructed the chart to classify the elements Cl, C, Ag, Zn, He, and P. What element that the student classified incorrectly in this chart?

A sugar cube was placed into a beaker containing 100 mL of water at room temperature and completely dissolved into the water,as represented by the series of diagrams labeled A, B, and C. What is one way to make the sugar cube dissolve faster in the 100 mL of water.

A sugar cube was placed into a beaker containing 100 mL of water at room temperature and completely dissolved into the water, as represented by the series of diagrams labeled A, B, and C below. What is one way that the dissolved sugar at C could be separated from the water?

The graph shows the solubility of three substances in 100 grams of water at various temperatures.

How many grams of KBr will dissolve in 100 grams of water at 60°C?

The diagram represents a closed system using a flask with a balloon attached. In the flask, a chemical reaction between solid baking soda and hydrochloric acid is occurring. The balloon has inflated as products have formed from the reaction. Which evidence in the diagram indicates that a gas was produced as a result of the reaction?

Base your answers on the portion of the Periodic Table of the Elements and on your knowledge of science. Which element from this portion of the table chemically reacts in a way similar to the way the element chlorine (Cl) reacts?

Base your answers on the portion of the Periodic Table of the Elements and on your knowledge of science. Which element is classified as a noble gas?

The diagram shows a light bulb, battery, and switch connected by wires. Why is the light bulb not lit when the switch is in the position shown.

The diagram shows a bar magnet. Points A, B, C, and D are locations on the magnet. Which position on the bar magnet would have the strongest attraction to the north pole of another bar magnet?

Which position of two magnets results in the greatest attraction between the magnets?

The diagrams below represent the same two

magnets placed in four different positions. The

North (N) and South (S) poles are labeled. At

which position will the force of attraction between

these two magnets be greatest?

Students wrapped a piece of insulated copper wire around an iron nail and then connected the two ends of the wire to a battery, making the nail magnetic. The experimental results are shown in the data table. How many paperclips would the electromagnet have picked up if the students had wrapped the wire around the nail only five times.

A student attached two balloons to equal lengths of string and tied them to the same point. The student observed that the balloons repelled each other, as shown in the diagram below. In terms of electrical charges, why do the balloons repel each other.

A common characteristic of sound waves is that

they

The diagram shows what occurs when a ray of light strikes and enters a pond. Which property of light is illustrated when the ray enters the pond?

Energy from the Sun reaches Earth mainly by

the process of

Which diagram best represents light being reflected after striking the flat surface of a mirror?

People often wear sunglasses in polar regions because most of the sunlight that strikes a snow-covered surface is

What color of visible light has the longest wavelength.

According to diagram, which two forms of electromagnetic energy mostly pass through the atmosphere

to Earth’s surface?

Ultraviolet rays can cause skin cancer in humans and other living things. Why has the depletion of the ozone layer by pollutants increased the risk of skin cancer.

The diagram below represents a metal spoon in

a glass of water.

The spoon’s broken appearance is caused by

light that is

Which type of electromagnetic energy that has a shorter wavelength than green light.

Which type of electromagnetic energy reflected by the Moon is most easily seen by a person on Earth?

The diagram represents two cans of water

at the same temperature. One can is painted

black and the other can is painted white. The

cans are placed on a sunny windowsill, and a

thermometer is placed in each can to measure

the water temperature. After four hours in the sunlight, the temperatures of the water in the cans will most likely be

The model below represents the relative wavelengths of different forms of electromagnetic energy. Which two forms of electromagnetic energy that have shorter wavelengths than visible light.

The Sun’s radiation comes to Earth as many different wavelengths of electromagnetic energy. One form of energy is ultraviolet radiation. A person’s overexposure to the Sun’s ultraviolet radiation (UV rays) is the biggest risk factor for skin cancer. Some ultraviolet radiation is absorbed by the ozone layer, which is located in Earth’s atmosphere. This ozone layer provides a natural protection for living organisms.

What is one reason why all of the ultraviolet radiation coming toward Earth does not reach the Earth's surface?

The Sun’s radiation comes to Earth as many different wavelengths of electromagnetic energy. One form of energy is ultraviolet radiation. A person’s overexposure to the Sun’s ultraviolet radiation (UV rays) is the biggest risk factor for skin cancer. Some ultraviolet radiation is absorbed by the ozone layer, which is located in Earth’s atmosphere. This ozone layer provides a natural protection for living organisms.

What is one action a person can take to avoid overexposure to UV radiation?

List the following three types of electromagnetic energy in order from shortest wavelength to longest wavelength: infrared, x rays, red visible light