PHYSICAL SCIENCE 11

Rising of smoke is an example of what type of motion according to Aristotle.

• natural

• reaction

• motion

• violent

The imaginary line perpendicular to a reflecting surface is called ___________.

• crooked line

• angular line

• parallel line

• normal line

A light ray approaching the surface is incident ray while the light leaving the surface is called reflected ray.

• FACT

• BLUFF

The assumption of light travels in a straight line is the basis of the Ray model of light.

• FACT

• BLUFF

The straight line path traversed by light is called ray.

• FACT

• BLUFF

What will happen if an external force is acted upon a body at rest?

• it will move

• nothing will happen

• it will not move

• it will remain in motion

Who claimed that heavy and light objects drop in the same way.

• Aristotle

• Copernicus

• Galileo

What will happen in the acceleration of the body if a marble moves in a sloped downward plane.

• accelerates

• nothing

• decelerates

• not determined

There are two laws of Kepler's Planetary of Motion.

• FACT

• BLUFF

The angle produced as a source of light bounces off reflecting surface is called ___________.

• angle of crookedness

• angle of incidence

• angle of reflection

• angle of bounce