Spring CA 2025 Review

Front

Which of the following is NOT a type of rock? Igneous, Metamorphic, Sedimentary, Crystalline

Back

Crystalline

Answer explanation

Crystalline is not a type of rock; it refers to a structure or texture found in some minerals. The three main types of rocks are igneous, metamorphic, and sedimentary.

Front

What process changes rocks from one type to another?

Back

Heat and pressure

Answer explanation

The process that changes rocks from one type to another is called metamorphism, which involves heat and pressure. This transforms existing rocks into metamorphic rocks, making 'Heat and pressure' the correct answer.

Front

What type of rock forms from cooled magma?

Back

Igneous

Answer explanation

Igneous rocks form from the cooling and solidification of magma or lava. This process distinguishes them from metamorphic rocks, which arise from existing rocks under heat and pressure, and sedimentary rocks, which form from sediment.

Front

What happens to potential energy when an object moves?

Back

It transforms into kinetic energy

Answer explanation

As an object moves, its potential energy decreases and transforms into kinetic energy, which is the energy of motion. This transformation is essential in understanding energy conservation in physics.

Front

Where does a bicycle rider have the most potential energy?

Back

At the top of a hill

Answer explanation

A bicycle rider has the most potential energy at the top of a hill because potential energy is highest when an object is at its maximum height relative to the ground. As the rider descends, potential energy converts to kinetic energy.

Front

What energy transformation occurs during photosynthesis?

Back

Light(radiant) to Chemical

Answer explanation

During photosynthesis, plants convert light energy (radiant) from the sun into chemical energy stored in glucose. This process is essential for producing food and oxygen, making 'Light(radiant) to Chemical' the correct transformation.

Front

What is one way to reduce air pollution?

Back

Carpooling

Answer explanation

Carpooling reduces the number of vehicles on the road, which decreases emissions and helps lower air pollution. In contrast, using more fossil fuels, burning wood, and cutting down trees would increase pollution.

Front

At what point does a roller coaster have the most kinetic energy?

Back

At the lowest point

Answer explanation

A roller coaster has the most kinetic energy at the lowest point because potential energy is converted to kinetic energy as it descends. At the highest point, it has maximum potential energy and minimal kinetic energy.

Front

What do the arrows in a food web represent?

Back

Direction of energy flow

Answer explanation

The arrows in a food web represent the direction of energy flow, indicating how energy is transferred from one organism to another through feeding relationships.

Front

Which energy transformation happens in a circuit with a battery and fan?

Back

Chemical to Mechanical

Answer explanation

In a circuit with a battery and fan, the battery converts chemical energy (from the battery's stored chemicals) into mechanical energy, which powers the fan's movement. Thus, the correct transformation is Chemical to Mechanical.