Constant means to occur continuously over a period of time.
There is a constant need for good answers.
The work I have to do in class is constant: it never seems to stop.
To use constant in a science question, first know that constant in science means a variable that does not change in an experiment. Variables are the different factors that can change in an experiment. For example, a sentence that includes the science word of constant could be: For this experiment, the constant would be... and then you write the constant.
I wonder what is the constant speed of this moving car
I found her gum-chewing to be a constant annoyance.
His constant interruption began to vex me.
She was riled by his constant lies.
A lot of mathematical problems about travelling distances, assume that you are travelling at a constant speed.
Despite his constant flattery, she refuses to go on a date with him.
Constant vituperation and abuse was detrimental to her personality and life.
The constant mantra of money management advisers is to save.
The constant barking of the new dog had frazzled his mother's nerves.