Q1_REVIEW IN SCIENCE 4

Which of the following is NOT considered a type of waste?

• Hazardous waste

• Organic waste

• Renewable waste

• Solid waste

Which of the following is a chemical property of matter?

• Color

• Density

• Flammability

• Volume

What waste disposal method would be the most environmentally responsible choice if you want to dispose of organic waste materials?

• Composting

• Incineration

• Landfill

• Recycling

How do you determine whether a change is chemical in nature?

• By analyzing the change in mass

• By measuring the change in size

• By observing a change in shape

• By evaluating whether new substances are formed

What is the purpose of valves in the heart?

• To regulate blood flow

• To prevent the backflow of blood

• To produce red blood cells

• To pump blood to the body

Regular exercise is known to improve heart health. What is the main reason why exercise benefits the heart?

• Exercise directly removes oxygen from the heart.

• Exercise has no impact on heart health.

• Exercise reduces the number of bloods in the heart.

• Exercise strengthens the muscles of the heart.

You have two liquids. One of them is known to be highly sensitive with acids, while the other is not. How can you determine which one is which using their chemical properties?

• Mix them with water to see which one dissolves.

• Add an acid to each and observe any reactions.

• Heat them to see which one boils.

• Compare their ability to float or sink.

Which statement best describe the function of the brainstem?

• Brainstem is responsible for regulating balance and coordination.

• Brainstem is responsible for controlling basic life functions like breathing and heart rate.

• Brainstem is responsible for processing sensory information.

• Brainstem is responsible for thinking and decision-making.

Why is it important to have good hygiene practices for your skin?

• To make the skin more colorful

• To impress other people

• To prevent skin infections and keep it healthy

• To develop strong muscles

What is the role of composting waste disposal method in conserving and protecting the environment?

• Composting generates electricity from organic waste.

• Composting converts organic waste into valuable soil fertilizer.

• Composting is a method for safely disposing of hazardous waste.

• Composting increases the need for landfills disposal method.