Sem1 Physical Science Exam

Front

What can be concluded if an object is accelerating?

Back

The forces acting on it are unbalanced.

Front

Why is scientific knowledge considered durable?

Back

It is based on empirical evidence and can change with new evidence.

Front

What does a distance-time graph showing a straight line indicate about an object's motion?

Back

The object is moving at a constant speed.

Front

Order the types of electromagnetic radiation from lowest to highest frequency: radio, microwave, infrared, visible, UV, X-ray, gamma.

Back

radio, microwave, infrared, visible, UV, X-ray, gamma.

Front

How does the scientific community ensure the durability of scientific knowledge?

Back

Through debate, confirmation, and peer review.

Front

What is the definition of acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause an object to accelerate.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation.

Front

What is empirical evidence?

Back

Empirical evidence is information acquired by observation or experimentation.

Front

What does a steep slope on a distance-time graph indicate?

Back

A steep slope indicates a higher speed of the object.