NSCAS Science Standards 2

Question 1

A student observes that a metal spoon left in hot soup becomes warm. Which type of heat transfer does this best illustrate?

Accepted Answer

Conduction

Answer

Conduction is the transfer of heat through direct contact between materials, such as a metal spoon in hot soup.

Question 2

Which of the following best describes a physical change?

Accepted Answer

Paper being cut into smaller pieces

Answer

Cutting paper changes its shape but not its chemical composition, making it a physical change.

Question 3

A ball is dropped from a tall building. As it falls, what energy transformation occurs?

Accepted Answer

Potential energy converts to kinetic energy

Answer

As the ball falls, gravitational potential energy is converted into kinetic energy.

Question 4

Which layer of Earth is composed primarily of solid iron and nickel?

Accepted Answer

Inner core

Answer

The inner core is composed mostly of solid iron and nickel under extreme pressure.

Question 5

A plant bends toward a light source over several days. What is this response called?

Accepted Answer

Phototropism

Answer

Phototropism is the directional growth of a plant in response to light.

(NSCAS) Nebraska Student-Centered Assessment System Practice Test