Final answer:
During a volcanic eruption, explosive scorching hot tephra, ash, and gas are released. This includes rock fragments, known as tephra, and various gases such as water vapor and sulfur dioxide. These eruptions can also generate pyroclastic flows.
Step-by-step explanation:
The statement that explosive scorching hot tephra, ash, and gas is true. During a volcanic eruption, high-pressure gas and rock fragments are forcefully expelled from the volcano. These fragments, known as tephra, can range in size from tiny ash particles to large rocks. The gas released during an eruption includes water vapor, carbon dioxide, sulfur dioxide, and other gases. The eruption can also produce pyroclastic flows, which are superheated mixtures of gas and rock that rapidly move down the volcano's slopes.