Question 1: The lifespan of Red Blood Cells is ________ days.
Question 2: An antibiotic substance “penicillin” was discovered by _____ who was a _____ scientist.
Question 3: “Quartz” is a mineral composed of ________ and Oxygen.
Question 4: “Coal” is an important fossil fuel. It is formed by the remains of
Question 5: Ocean currents refers to the directional movement of
Question 6: What on the Earth stores heat from the Sun?
Question 7: Ozone depletion in the upper atmosphere caused by the release of gases
Question 8: Which part of the eye plays a vital role in the vision?
Question 9: Which part of the eye is most sensitive to the light?
Question 10: How much time sunlight takes to reach the Earth?
Question 11:What is the speed of light in vacuum?
Question 12: The human body is about _____ water by weight.
Question 13: In a boiling pot of water, heat transfers from bottom to the surface of water. This is an example of
Question 14: The Earth receives energy from the sun through
Question 15: Our world (Earth) was formed about ________ years ago.
Question 16: Between the melting point and boiling point of a substance, the substance is a
Question 17: The minimum amount of vitamin stored in the human body is of:
Question 18: According to the Big Bang Theory, the universe began about ________ billion years ago.
Question 19: The orbital paths of “comets” are generally
Question 20: The seasons in the tropical climate are