TMSCA January 22,22

Front

What is the function of the cornea in the eye?

Back

The cornea is the transparent front part of the eye that covers the iris and pupil, helping to focus light onto the retina.

Front

What is the epilimnion in a body of water?

Back

The epilimnion is the upper layer of water in a thermally stratified lake, which is warmer and less dense than the deeper layers.

Front

What is a dependent variable in an experiment?

Back

A dependent variable is the variable that is measured or tested in an experiment, which is affected by changes in the independent variable.

Front

How can the strength of an electromagnet be improved?

Back

The strength of an electromagnet can be improved by using a ferromagnetic core, such as iron, instead of a non-ferromagnetic material like aluminum.

Front

What are bird feathers primarily made of?

Back

Bird feathers are primarily composed of beta-keratin, a type of protein.

Front

What is the role of the lens in the eye?

Back

The lens focuses light onto the retina, allowing for clear vision.

Front

What is the photic zone in a body of water?

Back

The photic zone is the upper layer of water that receives enough sunlight for photosynthesis to occur.

Front

What is the difference between the epilimnion and the hypolimnion?

Back

The epilimnion is the warm, upper layer of water, while the hypolimnion is the colder, denser bottom layer in a stratified body of water.

Front

What is beta-keratin?

Back

Beta-keratin is a type of fibrous protein that is a key structural component of bird feathers and reptile scales.

Front

What is an independent variable in an experiment?

Back

An independent variable is the variable that is changed or controlled in an experiment to test its effects on the dependent variable.