First Semester Review Part 2

A beaker of water is left on the hot plate until the contents begin to boil. Which of the following statements describes what is happening as the water is boiling?

• The water changes state from a liquid to a gas.
• The water gradually changes state from a gas to a liquid.
• The temperature of the water does not rise past 100° Celsius.
• The temperature of the water remains constant at 32° Celsius.

Tags

NGSS.MS-PS1-4

The image shows a pencil in an empty glass and a pencil in a glass of water. Which concept explains why the pencil does NOT appear to be straight in the glass of water?

• scattering of light
• refraction of light
• absorption of light
• transmission of light

The following equation illustrates the chemical reaction that occurs in a plant. Water + carbon dioxide + light energy to sugar + oxygen. Based on the law of conservation of energy, what happened to the light energy in the reaction?

• It was destroyed
• It was produced by the plant.
• It was changed into oxygen gas
• It was converted into chemical energy stored in sugar.

Tags

NGSS.MS-LS1-6

NGSS.MS-PS3-5

The speed of a mechanical wave through a medium depends on the type of medium. It also depends on the type of mechanical wave. Which statement is true?

• All waves travel at the same speed through any medium.
• All waves travel at the same speed if no medium is present.
• Electromagnetic waves require a medium, but mechanical waves do not.
• Mechanical waves require a medium, but electromagnetic waves do not.

Tags

NGSS.MS-PS4-2

When light is absorbed, it causes the temperature of an object to increase. When painting a house, experts recommended that in order to keep the house cooler, people choose paint colors that will reflect the most light. Which of these colors would reflect the MOST sunlight?

• black
• red
• white
• yellow

What is the MOST important step needed in an investigation to make a scientifically valid conclusion?

• material of recent discoveries
• detailed records of observations
• new computer-controlled equipment
• regular time allotments for observations

Tags

NGSS.MS-PS1-2

Caleb builds a birdhouse. When he hits a nail with a hammer, the energy of the moving hammer transfers to the nail. Which energy conversion occurs at the point that the hammer hits the nail?

• kinetic energy to light energy
• kinetic energy to sound energy
• potential energy to light energy
• potential energy to sound energy

Tags

NGSS.MS-PS3-5

What is the primary difference between the colors of visible light?

• The density of each color is different.
• The wavelength of each color is different.
• The heat produced by each color is different.
• The speed of each color in a vacuum is different.

Tags

NGSS.HS-PS4-1

Which order of energy transformations best describes what happens when you turn on a flashlight?

• EM (Light) and EM (Heat) to Chemical to Thermal
• EM (Light) and Thermal (Heat) to EM (electricity) to Chemical (potential)
• Chemical (potential) to EM (electricity) to EM (Light) and Thermal (Heat)
• Chemical (potential) to EM (Light) to EM (electricity) and Thermal (Heat)

Tags

NGSS.HS-PS3-4

Predict what would happen to the speed of a sound wave if it moved from a gas to a liquid.

• it would speed up
• it would slow down
• the speed would not change
• waves cannot travel through a liquid

Tags

NGSS.MS-PS4-2