Science Quiz for Grade 4

Which Filipino scientist is known for environmental management, marine conservation, and discovering 50 new species of reptiles and amphibians?

• Angel Alcala

• Agapito Flores

• Fe del Mundo

• Gregorio Y Zara

Which is the MOST famous invention of Thomas Edison?

• cellular phone

• fluorescent lamp

• incandescent light bulb

• television

In a small town in the Philippines, Dr. Del Mundo made significant contributions to child healthcare. Which statement does NOT explain how she revolutionized pediatric care in the Philippines?

• She introduced and championed breastfeeding.

• She established the first pediatric hospital in the Philippines.

• She developed innovative treatments for common childhood illnesses in rural areas.

• She was the first Asian woman accepted into Harvard Medical School.

How did Gutenberg's invention of the printing press impact society?

• It paved the way for the mass production of political propagandas.

• It revolutionized the way information was manipulated and weaponized.

• It made books and written materials more accessible, leading to an increase in literacy rates.

• It significantly impacted the flow of information in Hollywood and created famous celebrities and politicians.

How did the invention of the internet change our everyday lives?

• It contributes to social isolation and reduces face-to-face interactions.

• It allows fast global communication and makes vast amounts of information readily available.

• It causes addiction that negatively impacts mental health, leading to anxiety and depression.

• It decreases privacy, with personal data often exposed to potential breaches and identity theft.

Avery left her bicycle outside in the rain and noticed reddish-brown substance on it. What chemical property of iron causes it to rust?

• Iron atoms react with oxygen and water to form iron oxide.

• The rusting of iron involves an increase in the reaction state of iron.

• This phenomenon is a great example of the decomposition of non-metallic materials.

• The exposure of iron to hydrogen in the presence of moisture leads to the formation of rust.

During a science experiment, Samuel burns a piece of wood to observe its properties. Which of the following BEST describes a chemical property of matter when burned?

• The substance gains mass and becomes a solid residue.

• The substance loses its ability to conduct electricity and remains unchanged chemically.

• The substance transforms into a gas and dissolves completely in water without any energy release.

• The substance reacts with oxygen, producing heat, light, and new compounds such as carbon dioxide and water.

Avery is conducting an experiment on biodegradable materials. Which of the following BEST describes the chemical property of biodegradable material?

• It breaks down into harmless products by the action of decomposers.

• This material reacts violently with acids and bases, releasing toxic fumes.

• It does not react with other substances and remains unchanged over time.

• It is resistant to chemical changes and requires high temperatures to decompose.

Maya noticed a pile of decaying leaves and food scraps in the park. She wondered how this could affect the community's health.

• The decay process removes oxygen, making it hard to breathe.

• The decay releases harmful gases that can cause breathing problems.

• Decaying materials attract bacteria and pests that spread diseases to people and animals.

• Rotting waste draws animals that can bring antidote to some diseases, helping humans to strengthen their immunity.

As the student council president, Anika is organizing a campaign for environmental awareness. Which campaign is the BEST choice for your school?

• Healthy Mind and Healthy Body Campaign

• Reduction in Landfill Waste Campaign

• Resource Conservation Campaign

• Soil Enrichment Campaign