2023 Semester Exam-8th

Thunderstorms are more common in some areas than in others. The map shows the average number of thunderstorms per year in different parts of the United States. Why are there significantly more thunderstorms in Florida than in California?

• The state of Florida is smaller than the state of California.

• The air in Florida is more stable than the air in California.

• The air above Florida holds less moisture than the air above California.

• The ocean currents near Florida are warmer than the ocean currents near California.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

All hurricanes must have an energy source to form and grow. From where does this energy come?

• High air pressures

• Warm ocean waters

• The Earth's rotation on its axis

• Warm air rises and pulls cooler air is pulled into it

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

NGSS.MS-ESS3-2

In 2011, Typhoon Nesat struck the Philippines and caused widespread flooding. After hitting the Philippines, Typhoon Nesat was predicted to hit the large city of Hanoi, Vietnam.

If Typhoon Nesat had continued along the same path, which development would most likely have reduced its strength before it hit Hanoi?

• The formation of a low-pressure area south of Bangkok

• The formation of a high-pressure area south of Bangkok

• Cool water moving into the sea east of Hanoi

• Warm water moving into the sea east of Hanoi

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

A student created a model of convection using a beaker, water, and food coloring. The model did NOT demonstrate convection as the student had intended. The model could be improved to best demonstrate and model convection by adding a-

• light source

• heat source

• 2nd food color

• wind source

Tags

NGSS.MS-PS3-3

The weather map shows the weather conditions for one day across the United States. Based on the weather map, which city will most likely experience decreasing temperatures during the next 24 hours?

• Minneapolis, because a cold front is approaching

• Atlanta, because a warm front is approaching

• Houston, because it is in a high-pressure area

• Denver, because it is raining there

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which of these best explains why the oceans have a great impact on the weather over the continents?

• Ocean waves move more easily than continental rock.

• The oceans contain a wider variety of organisms than the continents.

• The oceans store and transfer more heat than the continents.

• Ocean water contains more salt than most continental lake water.

Tags

NGSS.MS-ESS2-6

Hurricanes and similar storm systems begin over oceans. The map below shows average surface temperatures of the oceans in the summer. Based on the map, which area probably produced the most violent storm systems?

• Area 1

• Area 2

• Area 3

• Area 4

Tags

NGSS.MS-ESS2-6

How do convection currents form?

• When heated air expands, it becomes less dense, rises, and displaces cooler, more dense air, which moves downward.

• When cooled air contracts, it becomes less dense, falls downward, and displaces warmer, more dense air, which rises.

• When heated air expands, it becomes more dense, falls downward, and displaces cooler, less dense air, which rises.

• When cooled air contracts, it becomes more dense, rises, and displaces warmer, less dense air, which falls downward.

Tags

NGSS.MS-ESS2-6

Identify the direction the low pressure system is moving across the state of Texas.

• northwest to southeast

• southeast to northwest

• southwest to northeast

• northeast to southwest

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The air mass over the northwest part of Texas is an area of ____________________;

therefore, the weather associated with it is ______________________. According to the above diagram, which words complete the sentence above?

• Low pressure ; stormy

• Low pressure ; clear

• High pressure ; stormy

• High pressure ; clear

Tags

NGSS.MS-ESS2-5