Front

What is the process of matter changing from a solid to a liquid?

Back

Melting

Answer explanation

The process of matter changing from a solid to a liquid is called melting. During melting, heat is added, causing the solid's particles to gain energy and move apart, transforming into a liquid state.

Front

What is the process of matter changing from a gas to a liquid?

Back

Condensation

Answer explanation

The process of matter changing from a gas to a liquid is called condensation. During condensation, gas molecules lose energy and come together to form a liquid, which is the opposite of evaporation.

Front

What is the correct sequence of processes water undergoes in the water cycle?

Back

Evaporation, Condensation, Precipitation

Answer explanation

The correct sequence is Evaporation (water vapor rises), then Condensation (vapor cools to form clouds), and finally Precipitation (water falls as rain). Thus, the answer is Evaporation, Condensation, Precipitation.

Front

Which example is a form of precipitation? Dew, Fog, Frost, Hail

Back

Hail

Answer explanation

Hail is a form of precipitation that consists of balls or irregular lumps of ice. Unlike dew, fog, and frost, which are not classified as precipitation, hail forms during thunderstorms and falls to the ground.

Front

On Earth, what process generates most of the water vapor?

Back

Evaporation

Answer explanation

Most water vapor on Earth is generated by evaporation, where water from oceans, lakes, and rivers turns into vapor due to heat. This process is crucial for the water cycle, unlike condensation, precipitation, or transpiration.

Front

What provides the energy for the water cycle?

Back

Sun

Answer explanation

The Sun provides the energy for the water cycle by heating water in oceans and lakes, causing evaporation. This process is essential for the cycle, making the Sun the correct answer.

Front

Rain, sleet, snow, and hail are all types of...

Back

Precipitation

Answer explanation

Rain, sleet, snow, and hail are all forms of water that fall from the atmosphere to the ground. This process is known as precipitation, making it the correct answer.