Section A (Objective):
Question: What is the chemical symbol for gold?
A) Go
B) Au
C) Ag
D) Fe
Answer: B) Au
Question: Which planet is known as the “Red Planet”?
A) Venus
B) Mars
C) Jupiter
D) Saturn
Answer: B) Mars
Question: What is the process of plants making their own food using sunlight called?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Digestion
Answer: B) Photosynthesis
Question: What is the SI unit for measuring temperature?
A) Kelvin
B) Celsius
C) Fahrenheit
D) Newton
Answer: B) Celsius
Question: Which of the following is a renewable energy source?
A) Coal
B) Solar power
C) Natural gas
D) Nuclear energy
Answer: B) Solar power
Question: What gas do plants absorb during photosynthesis?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C) Carbon dioxide
Question: What is the largest mammal on Earth?
A) Elephant
B) Blue whale
C) Giraffe
D) Gorilla
Answer: B) Blue whale
Question: Which layer of the Earth’s atmosphere contains the ozone layer?
A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere
Answer: B) Stratosphere
Question: What is the chemical formula for water?
A) CO2
B) H2O
C) O2
D) NaCl
Answer: B) H2O
Question: What is the primary function of the heart in the human body?
A) Pumping blood
B) Digesting food
C) Breathing
D) Filtering waste
Answer: A) Pumping blood
Question: Which of the following is a conductor of electricity?
A) Plastic
B) Wood
C) Copper
D) Rubber
Answer: C) Copper
Question: What is the chemical symbol for oxygen?
A) Ox
B) O2
C) Oc
D) Ox2
Answer: B) O2
Question: What is the force that pulls objects toward the center of the Earth?
A) Magnetism
B) Gravity
C) Friction
D) Buoyancy
Answer: B) Gravity
Question: Which gas do humans inhale during respiration?
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
Answer: A) Oxygen
Question: What is the function of the kidneys in the human body?
A) Pumping blood
B) Digesting food
C) Filtering waste from blood
D) Producing hormones
Answer: C) Filtering waste from blood
Section B (Theory):
Question: Explain the process of photosynthesis in plants.
Answer: Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose and oxygen. The chlorophyll in plant cells captures sunlight, which is then used to convert carbon dioxide and water into glucose, releasing oxygen as a byproduct.
Question: Define the three states of matter and give an example of each.
Answer: The three states of matter are solid, liquid, and gas. An example of a solid is ice, a liquid is water, and a gas is steam.
Question: Describe the water cycle and its importance in the environment.
Answer: The water cycle involves the continuous movement of water between the Earth’s surface, atmosphere, and back. This includes processes like evaporation, condensation, precipitation, and runoff. The water cycle is crucial for maintaining a balance in the Earth’s ecosystems and providing a constant supply of freshwater.
Question: Explain the difference between renewable and non-renewable sources of energy.
Answer: Renewable energy sources are those that can be replenished naturally, such as solar, wind, and hydroelectric power. Non-renewable sources, like fossil fuels (coal, oil, and natural gas), are finite and take millions of years to form, making them unsustainable in the long term.
Question: Describe the structure and function of the respiratory system in humans.
Answer: The respiratory system includes organs like the nose, trachea, bronchi, and lungs. Its primary function is to facilitate the exchange of oxygen and carbon dioxide between the body and the environment. Inhalation brings oxygen into the lungs, where it is absorbed into the bloodstream, and exhalation removes carbon dioxide from the body.
FAQs
What are Junior WAEC Basic Science past questions?
Junior WAEC Basic Science past questions are collections of questions that have appeared in previous Basic Education Certificate Examination (BECE) or Junior WAEC examinations. These questions cover topics taught in junior secondary school basic science such as energy, living and non-living things, environmental science, human body systems, and simple machines. They usually include both objective (multiple-choice) and theory sections, helping students understand the exam pattern and the types of questions they are likely to encounter.
Why should students practice Junior WAEC Basic Science past questions?
Practicing past questions helps students become familiar with the structure of the examination and improves their confidence before the exam. It also allows them to identify important topics that frequently appear in the exam and test their understanding of key scientific concepts. By repeatedly solving past questions, students can improve their speed, accuracy, and ability to properly structure answers in the theory section.
What is the difference between objective and theory questions in Junior WAEC Basic Science?
Objective questions usually consist of multiple-choice questions where students are given several options and asked to select the correct answer. These questions test a student’s quick understanding of scientific facts and concepts. Theory questions, on the other hand, require students to explain concepts in detail, define scientific terms, describe processes, or solve short scientific problems. The theory section evaluates a student’s deeper understanding of the subject and their ability to communicate scientific ideas clearly.
How can students effectively use Junior WAEC Basic Science past questions for exam preparation?
Students can effectively use past questions by practicing them regularly under timed conditions similar to the real examination. After attempting the questions, they should carefully check the answers and review topics where they made mistakes. It is also helpful to study the explanations for both objective and theory answers so they can understand the reasoning behind each solution. Consistent practice with past questions, combined with proper study of the syllabus and textbooks, greatly increases a student’s chances of performing well in the Junior WAEC Basic Science examination.
Also Read: JSS3 Junior Waec Computer Studies Past Questions and Answers (Objective and Theory)
