CAEC - Canadian Adult Education Credential Life and Physical Sciences Questions and Answers

Question 1

A student places a beaker of water on a hot plate and observes that the water at the bottom of the beaker gets hot and rises, while the cooler water at the top sinks to take its place.
This process continues, creating a circular movement of water.
Which method of heat transfer is primarily demonstrated in this scenario?

Accepted Answer

Convection

Answer

Conduction

Answer

Radiation

Answer

Insulation

Question 2

Which of the following correctly describes the primary function of mitochondria within a eukaryotic cell?

Accepted Answer

To generate most of the cell's supply of adenosine triphosphate (ATP) through cellular respiration.

Answer

To store genetic information and control cell activities.

Answer

To synthesize proteins based on instructions from the nucleus.

Answer

To convert light energy into chemical energy through photosynthesis.

Question 3

In a food web, an organism that breaks down dead organic material, returning essential nutrients to the soil, is known as a:

Accepted Answer

Decomposer

Answer

Producer

Answer

Primary Consumer

Answer

Secondary Consumer

Question 4

A chemical solution with a pH of 3 is considered to be:

Accepted Answer

Acidic

Answer

Neutral

Answer

Basic

Answer

Alkaline

Question 5

A person pushes a 50 kg box across a frictionless surface with a constant force, causing it to accelerate at 2 m/s². According to Newton's Second Law of Motion (F=ma), what is the net force applied to the box?

Accepted Answer

100 N

Answer

25 N

Answer

52 N

Answer

250 N

Question 6

Which human body system is primarily responsible for transporting oxygen, nutrients, and hormones to cells throughout the body and removing waste products like carbon dioxide?

Accepted Answer

Circulatory System

Answer

Respiratory System

Answer

Digestive System

Answer

Nervous System