Science Standards Flashcards

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

Answer: Conduction

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

Which of the following best describes a physical change?

Answer: Paper being cut into smaller pieces

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

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

Answer: Potential energy converts to kinetic energy

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

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

Answer: Inner core

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

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

Answer: Phototropism

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

Which of the following is an example of a producer in a food web?

Answer: Grass

Grass is a producer because it makes its own food through photosynthesis.

What happens to the temperature of water as it changes from a liquid to a gas?

Answer: It stays the same during the phase change

During a phase change, added energy breaks molecular bonds rather than raising temperature, so temperature stays constant.