Our Environment What is an ecosystem?a) A collection of only animals in a regionb) A system where living and non-living…
Magnetic Effects of Electric Current What happens when an electric current passes through a metallic conductor?a) It produces heatb) It…
Electricity 1. What is the SI unit of electric current?A) VoltB) AmpereC) OhmD) CoulombAnswer: B) Ampere2. Which instrument measures electric…
The Human Eye and the Colorful World What is the transparent bulge on the front surface of the eyeball called?a)…
Light Reflection and Refraction What is the principal focus of a concave mirror?a) The point where parallel rays convergeb) The…
Heredity 1. What is heredity?a) The process of creating DNAb) The transmission of traits from one generation to the nextc)…
How to Organisms Reproduce 1. Why do organisms reproduce?a) To maintain their body designb) To ensure species survivalc) To grow…
Control and Coordination What is the main function of the nervous system in animals?a) Digestionb) Control and coordinationc) Blood circulationd)…
Life Processes 1. What is the primary criterion to determine if something is alive?a) Ability to reproduceb) Ability to breathec)…
Carbon and its Compounds What is the percentage of carbon present in the Earth's crust?a) 0.02%b) 0.03%c) 2%d) 3%Answer: a)…
