2024-25 Common Assessment ( December)

Front

What happens to the height of an ocean wave as it approaches the shore and its velocity decreases?

Back

The height of the wave increases.

Front

What do imprint fossils of ocean clams in the Appalachian Mountains indicate about the region's past?

Back

These mountains were once under the ocean.

Front

Which object has more kinetic energy when two objects of different masses are in motion?

Back

The object with more mass has more kinetic energy.

Front

Why is a perpetual motion machine impossible to design?

Back

Friction reduces the efficiency of the system.

Front

What phenomenon is demonstrated when a pencil appears broken when viewed through water and glass?

Back

Refraction and light waves.

Front

Define kinetic energy.

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

What is the principle of refraction?

Back

Refraction is the bending of light as it passes from one medium to another.

Front

Explain the concept of energy conservation in a closed system.

Back

The total energy in a closed system remains constant; energy can neither be created nor destroyed.

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy increases with mass; more massive objects have more kinetic energy at the same velocity.

Front

What is the role of friction in energy systems?

Back

Friction converts kinetic energy into thermal energy, reducing the efficiency of the system.