24-25 1st Semester Exam-8th

Front

What should you do when heating a substance in a test tube?

Back

Always point the open end of the tube away from all people.

Front

What is the force exerted by a surface as an object moves across it?

Back

Frictional Force.

Front

Can laboratory work be started immediately upon entering the laboratory without the instructor present?

Back

False.

Front

What is the force exerted by a compressed or stretched spring called?

Back

Spring Force.

Front

In the motion of a rolling tennis ball, which time represents the ball slowing down?

Back

1st half: 1 min 5s; 2nd half: 1 min 25s.

Front

What is the definition of Frictional Force?

Back

The force that opposes the motion of an object as it moves across a surface.

Front

What is the definition of Spring Force?

Back

The force exerted by a spring when it is compressed or stretched.

Front

What safety measure should be taken when working in a laboratory?

Back

Always wait for the instructor before starting any laboratory work.

Front

What is the role of the instructor in a laboratory setting?

Back

To provide guidance and ensure safety during experiments.

Front

What happens to the speed of an object when it experiences friction?

Back

The speed decreases as friction opposes the motion.