Science Virtual Guide 4a First Session

Melting is the process in which a solid substance changes into a liquid state. This occurs when heat is applied to the solid, causing the particles to gain enough energy to break their fixed positions and move more freely. As a result, the solid substance transforms into a liquid, maintaining its chemical composition but losing its rigid structure. Therefore, the correct answer is "Solid to Liquid."

When the temperature drops significantly, water molecules lose energy and slow down. At a certain point, the molecules move so slowly that they start to form a rigid structure, known as ice. This process is called freezing. In the given scenario, the cold temperature causes the water in the lake to freeze and transform into ice.

During freezing, a change of state occurs where a liquid substance transforms into a solid state. This process involves the lowering of temperature, causing the particles in the liquid to slow down and come closer together, forming a rigid and organized structure. This transformation is commonly observed when water freezes and turns into ice.

Evaporation is the process in which a substance changes from a liquid to a gas at a temperature below its boiling point. In the given question, it is stated that gasoline can exist as a solid, liquid, or gas, indicating that it can undergo phase changes. Since the question asks for the name of process B in the diagram, and evaporation is the process of a liquid turning into a gas, it can be concluded that process B is evaporation.

Evaporation is the process that occurs when a liquid turns into a gas. This happens when the molecules of a liquid gain enough energy to break the intermolecular forces holding them together and escape into the air as gas. Unlike boiling, which occurs at a specific temperature throughout the liquid, evaporation can happen at any temperature as long as the liquid has enough energy to overcome the intermolecular forces.

The correct stage of the picture is pollination. Pollination is the process by which pollen is transferred from the male part of a flower to the female part, leading to fertilization and the production of seeds. This stage is crucial for plant reproduction as it allows for the transfer of genetic material between plants, ensuring genetic diversity and the continuation of the species.

Animals disperse strawberry seeds by defecating them. When animals consume strawberries, the seeds pass through their digestive system and are excreted in their feces. This process allows the seeds to be transported to new locations away from the parent plant, increasing the chances of successful germination and growth.

Condensation is the process by which a substance changes from a gas to a liquid state. In the given question, gasoline is mentioned as being able to exist in solid, liquid, or gas form. Since condensation specifically refers to the change from gas to liquid, it is the appropriate term to describe process D in the diagram.

Process A in the flow chart is evaporation. Evaporation is the process by which water changes from a liquid to a gas or vapor, usually due to heat. In the water cycle, evaporation occurs when water on the Earth's surface, such as in oceans, lakes, and rivers, is heated by the sun and turns into water vapor, rising into the atmosphere. This process is essential for the water cycle as it helps to transfer water from the Earth's surface back into the atmosphere.

The correct stage of the picture is seed dispersal. This is the stage in the life cycle of flowering plants where mature seeds are released from the parent plant and are dispersed to new locations. This dispersal helps in the colonization of new areas and prevents competition between parent and offspring plants.

Evaporation is the process that changes water in the sea into water vapor. During evaporation, water molecules gain enough energy to break free from the liquid surface and become a gas. This process occurs when the sun's heat causes the water to heat up and turn into vapor, which then rises into the atmosphere. Evaporation is an important part of the water cycle, as it helps to transfer water from the Earth's surface back into the atmosphere, where it can later form clouds and eventually return to the Earth as precipitation.

As a plant grows, its roots also grow longer and deeper into the soil. This allows the plant to anchor itself more firmly and access more nutrients and water from the soil. The longer and deeper roots also help the plant withstand wind and other environmental stresses. Additionally, the increased surface area of the roots allows for more absorption of water and minerals, which are essential for the plant's growth and survival.

Condensation is indeed the opposite of evaporation. Evaporation is the process by which a liquid turns into a gas, while condensation is the process by which a gas turns into a liquid. During evaporation, heat energy is absorbed, causing the liquid particles to gain enough energy to escape into the gas phase. On the other hand, during condensation, heat energy is released, causing the gas particles to lose energy and come together to form a liquid. Therefore, condensation and evaporation are opposite processes that occur when there is a change in the state of matter from gas to liquid or vice versa.

The process A in the diagram is called melting. Melting is the process in which a solid substance changes into a liquid state when heat is applied. In this process, the solid particles gain enough energy to overcome their attractive forces and move freely, resulting in a change from a solid to a liquid state.

The correct answer is A and E because seeds that are dispersed by the wind typically have adaptations that allow them to be easily carried by air currents. Seed A and seed E are most likely to have these adaptations.

Freezing is the process in which a substance changes from a liquid to a solid state, typically due to a decrease in temperature. In the context of gasoline, freezing refers to the transition of gasoline from a liquid state to a solid state.

The explanation for the given correct answer is that condensation actually occurs when a gas turns into a liquid. This process happens when the temperature of the gas decreases, causing the gas molecules to slow down and come closer together, forming a liquid.

In a male flower, the anther and filament are present. The anther is responsible for producing pollen, which contains the male reproductive cells. The filament is the stalk-like structure that supports the anther. The other options mentioned in the answer choices, such as ovary, stigma, and ovule, are parts of the female flower and are not present in a male flower.

As a plant grows, one of the things that happen to its leaves is that they become larger and bigger. This is because as the plant grows, it needs more surface area to carry out photosynthesis and absorb sunlight. The increase in size allows the leaves to capture more light energy and produce more food for the plant.

Seed D is dispersed by explosion.

The correct order of the life cycle of a plant is germination, pollination, fertilization, seed production, and seed dispersal. Germination is the process in which a seed begins to grow into a new plant. Pollination is the transfer of pollen from the male reproductive organ to the female reproductive organ of a plant. Fertilization occurs when the sperm from the pollen fertilizes the egg in the ovary, leading to the formation of a seed. Seed production involves the development and maturation of the seed. Seed dispersal is the method by which seeds are spread away from the parent plant to ensure the survival and growth of new plants.

Pollen is the correct answer because it is the part of the male flower that fertilizes the female flower. Pollen contains the male reproductive cells, which are transferred from the male flower to the female flower, allowing fertilization to occur.

Process B is condensation. Condensation is the process in which water vapor, a gaseous state of water, cools and changes into liquid water droplets. This occurs when the air temperature decreases to the point where it cannot hold all of the moisture it contains, leading to the formation of tiny water droplets on surfaces or in the air.