PMA 2 Review

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What can result from failure to maintain homeostasis?

Back

Lack of internal balance, eventual death, and difficulty carrying on metabolism.

Front

What is the most dense substance among vegetable oil, dish soap, honey, and corn syrup?

Back

Honey is the most dense substance.

Front

What is the nucleus of an atom?

Back

The nucleus is the central region of an atom where its neutrons and protons are located.

Front

What type of eclipse occurs when the Earth is between the sun and the moon?

Back

Lunar Eclipse.

Front

How do you calculate density?

Back

Density is calculated by dividing mass by volume (Density = Mass/Volume).

Front

What is the density of a cube with a mass of 4 grams and a volume of 2 cm³?

Back

The density is 2 g/cm³.

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus and contribute to the atomic mass.

Front

What happens during a solar eclipse?

Back

During a solar eclipse, the moon passes between the Earth and the sun, blocking the sun's light.

Front

What is the electron cloud?

Back

The electron cloud is the region around the nucleus of an atom where electrons are likely to be found.