PHYSICS CLASS TEST WEEK

Question 1

Speed

Answer 1

A measure of how fast something is moving. It can be found using distance/time.

Question 2

Average Speed

Answer 2

A type of speed that you can find by dividing the total distance by the total time taken.

Question 3

Scalar

Answer 3

A quantity that are fully described by a magnitude alone. Some examples are:

1. Distance
2. Speed
3. Time
4. Power
5. Energy

Question 4

Vector

Answer 4

A quantity that are fully described by a magnitude and direction. Some examples are:

1. Displacement
2. Velocity
3. Acceleration
4. Force
5. Weight
6. Momentum

Question 5

Acceleration

Answer 5

The increase of speed, it can be found using Change of speed or velocity/The Time taken

Question 6

Deceleration

Answer 6

The decrease of speed, it can be found using Starting speed - Final Speed/The time taken

Question 7

Light

Answer 7

Electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye.

Question 8

Transparent Object

Answer 8

An object that lets all light pass through them.

Question 9

Translucent Object

Answer 9

An object that lets some light pass through them.

Question 10

Opaque Object

Answer 10

An object that doesn’t let any light pass through them.

Question 11

Shadow

Answer 11

The darkness formed when an object blocks the light. It’s formed by an opaque/translucent object blocking the light falling on it.

Question 12

Characteristics of Light

Answer 12

1. It travels in a straight line.
2. It’s both a wave and a particle.
3. Light travels in really fast speeds.

Question 13

Characteristics of a Shadow

Answer 13

1. It is always black, regardless of the color of the
   object.
2. It only shows the outline of an object, not the details.
3. The size of a shadow depends on the distance
   between the object and the source of light, and the
   distance between the object and the screen.

Question 14

Characteristics of an Image

Answer 14

1. Follows the color of the object.
2. Shows the details of the object, not only the outline.
3. Undergoes lateral vision.

Question 15

Luminous Objects

Answer 15

Objects that can emit light energy by themselves.

Question 16

Non-Luminous Objects

Answer 16

Objects that cannot emit light energy by themselves.

Question 17

Reflection

Answer 17

Reflection is a change in direction of a wave upon

striking the interface between two materials. The law of reflection is Angle of Reflected Ray = Angle of Incident Ray

Question 18

Reflective Objects vs Non-reflective Objects

Answer 18

Reflective: Have a smooth, shiny surface and pale, Give clear image because they reflect light regularly.
Non Reflective: Have rough and usually dark colors,
Give diffused image because they reflect irregularly.

Question 19

Refraction

Answer 19

Bending of Light. It effects in making objects look bent in water and in air.

Question 20

Dispersion

Answer 20

Refraction of different colors by

different amounts.