Science Class 5

What are the main groups of microorganisms?

• Viruses, Bacteria, and Algae

• Bacteria, Algae, and Protozoa

• Plants, Animals, and Fungi

• Bacteria, Virus, and Fungi

Which of the following is a role of microorganisms in decomposition?

• Producing oxygen

• Breaking down organic matter

• Absorbing nutrients

• Creating energy

What is the definition of a luminous object?

• An object that emits light

• An object that refracts light

• An object that reflects light

• An object that absorbs light

Which of the following is a natural source of light?

• Torch

• Sun

• Bulb

• Lighter

What is the main characteristic of transparent objects?

• They reflect all light

• They absorb all light

• They allow light to pass through clearly

• They do not allow light to pass through

What is the primary cause of noise pollution?

• Natural disasters

• Animal sounds

• Traffic and machinery

• Loud music

Which layer of the Earth is known as the crust?

• The outermost layer

• The layer beneath the mantle

• The innermost layer

• The layer of liquid rock

What is the purpose of a satellite?

• To create weather patterns

• To communicate with animals

• To orbit planets and gather data

• To produce energy

Which of the following is an example of an artificial satellite?

• The Moon

• Hubble Space Telescope

• Jupiter

• Mars

What is the main function of a plumb line?

• To measure temperature

• To check weight

• To determine vertical alignment

• To measure distance