1. What is the largest planet in our solar system?
a) Earth
b) Saturn
c) Jupiter
d) Uranus
Answer: c) Jupiter
2. Which scientist is credited with the discovery of gravity?
a) Galileo Galilei
b) Isaac Newton
c) Albert Einstein
d) Leonardo da Vinci
Answer: b) Isaac Newton
3. What is the process by which plants make their own food?
a) Respiration
b) Photosynthesis
c) Decomposition
d) Fermentation
Answer: b) Photosynthesis
4. Which element is the lightest in the periodic table?
a) Hydrogen
b) Helium
c) Oxygen
d) Nitrogen
Answer: a) Hydrogen
5. What is the largest living thing on Earth?
a) Blue whale
b) Great Barrier Reef
c) Amazon rainforest
d) Grand Canyon
Answer: b) Great Barrier Reef
6. Which scientist developed the theory of evolution through natural selection?
a) Charles Darwin
b) Gregor Mendel
c) Albert Einstein
d) Louis Pasteur
Answer: a) Charles Darwin
7. What is the process by which water moves through a plant, from the roots to the leaves?
a) Respiration
b) Photosynthesis
c) Transpiration
d) Evaporation
Answer: c) Transpiration
8. Which type of rock is formed from the cooling and solidification of magma?
a) Igneous
b) Sedimentary
c) Metamorphic
d) Foliated
Answer: a) Igneous
9. Which scientist is credited with the development of the polio vaccine?
a) Jonas Salk
b) Edward Jenner
c) Louis Pasteur
d) Alexander Fleming
Answer: a) Jonas Salk
10. What is the largest organ in the human body?
a) Brain
b) Heart
c) Lungs
d) Skin
Answer: d) Skin
11. Which type of energy is transferred from one object to another through direct contact?
a) Thermal energy
b) Kinetic energy
c) Potential energy
d) Electrical energy
Answer: a) Thermal energy
12. Which scientist is credited with the discovery of the X-ray?
a) Wilhelm Conrad Röntgen
b) Marie Curie
c) Albert Einstein
d) Niels Bohr
Answer: a) Wilhelm Conrad Röntgen
13. What is the process by which the Earth’s plates move and change?
a) Continental drift
b) Plate tectonics
c) Weathering and erosion
d) Glaciation
Answer: b) Plate tectonics
14. Which type of cell is the basic unit of life?
a) Tissue
b) Organ
c) Organ system
d) Cell
Answer: d) Cell
15. Which scientist is credited with the development of the first successful vaccine?
a) Edward Jenner
b) Louis Pasteur
c) Jonas Salk
d) Alexander Fleming
Answer: a) Edward Jenner