Chapter 6 Science Test

Thunderstorms are characterized by lightning, heavy rain, and can be dangerous. They are weather phenomena that occur when warm, moist air rises rapidly and collides with cooler air, creating instability in the atmosphere. This instability leads to the formation of cumulonimbus clouds, which produce lightning and heavy rainfall. Thunderstorms can also bring strong winds, hail, and even tornadoes, making them potentially hazardous. Unlike hurricanes, snow storms, and blizzards, which have their own distinct characteristics, thunderstorms are specifically known for their combination of lightning, heavy rain, and potential danger.

When snow falls, it feels cold. Snow is made up of frozen water particles, and the low temperature causes it to feel cold to the touch. Additionally, snow is often associated with winter, which is a season known for its cold temperatures. Therefore, the correct answer is "cold."

Animals migrate in the fall so they can find food in warm places. During the fall, the temperature starts to drop, and food becomes scarce in their current habitat. By migrating to warmer places, animals can ensure a steady supply of food, as many plants continue to grow and provide nourishment. The warmer climate also allows for a longer growing season, providing more opportunities for animals to find food and survive during the winter months.

To be safe during a tornado while at home, it is important to go to the center of the house. This is because the center of the house, such as a basement or an interior room on the lowest level, provides the most protection from flying debris and collapsing structures. It is crucial to avoid windows and exterior walls as they are more susceptible to damage during a tornado. Seeking shelter in the center of the house increases the chances of survival and reduces the risk of injury.

The correct answer is "every year" because seasons follow a cyclical pattern and occur in a specific order throughout the year. They repeat in the same sequence annually, with each season lasting for a certain period of time before transitioning to the next. This repetition allows us to anticipate and prepare for the changes that come with each season, such as temperature, weather conditions, and the growth of plants and animals.

Flowers grow in the Spring because this is the season when the weather becomes warmer and more favorable for plant growth. The longer days and increased sunlight provide the necessary energy for flowers to bloom. Additionally, the Spring season often brings more rainfall, which provides the water flowers need to grow and thrive.

Summer is the correct answer because it is a season known for its sunshine, hot air, and the abundance of leaves on trees. During summer, the sun is at its peak, resulting in warm temperatures and clear skies. The hot air creates a pleasant and inviting atmosphere for outdoor activities. Additionally, summer is when trees are fully leafed out, providing shade and a vibrant green landscape.

After evaporation in the water cycle, the water vapor rises into the atmosphere and condenses, which means it changes from a gas to a liquid state. As the water vapor condenses, it releases heat and cools down. This cooling causes the formation of clouds, which are made up of tiny water droplets or ice crystals suspended in the air. Therefore, the correct answer is "condenses, cools, clouds."

A storm that has strong winds and heavy rains but forms only over oceans is called a hurricane. Hurricanes are large, swirling storms that form over warm ocean waters. They are characterized by their strong winds, which can reach speeds of over 74 miles per hour, and their heavy rainfall. Unlike thunderstorms and tornadoes, which can form over land, hurricanes specifically form over oceans.