Question
Write 95 junior high school science quizzing competition questions and their respective answers
Answers
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Here’s a list of 95 junior high school science quiz questions along with their respective answers, organized by category:
### Biology
1. **Q:** What is the basic unit of life?
**A:** Cell
2. **Q:** What process do plants use to make their own food?
**A:** Photosynthesis
3. **Q:** What organ in the human body is responsible for pumping blood?
**A:** Heart
4. **Q:** What is the largest organ in the human body?
**A:** Skin
5. **Q:** Which part of the cell contains the genetic material?
**A:** Nucleus
6. **Q:** What is the function of the ribosome in a cell?
**A:** Protein synthesis
7. **Q:** What do you call an organism that makes its own food?
**A:** Autotroph
8. **Q:** What type of blood cell is responsible for fighting infections?
**A:** White blood cell
9. **Q:** What is the name of the process by which cells divide?
**A:** Mitosis
10. **Q:** What type of organism is a mushroom?
**A:** Fungus
### Chemistry
11. **Q:** What is the chemical formula for water?
**A:** H2O
12. **Q:** What is the pH level of pure water?
**A:** 7
13. **Q:** What is the process of a solid turning directly into a gas called?
**A:** Sublimation
14. **Q:** Which gas do plants take in during photosynthesis?
**A:** Carbon dioxide
15. **Q:** What is a solution that has a pH less than 7 called?
**A:** Acid
16. **Q:** What is the smallest unit of an element?
**A:** Atom
17. **Q:** What noble gas is used in neon signs?
**A:** Neon
18. **Q:** What do you call a substance that can change its state of matter?
**A:** Phase change
19. **Q:** What is the term for a chemical reaction that absorbs heat?
**A:** Endothermic reaction
20. **Q:** What do you call a reaction that releases energy?
**A:** Exothermic reaction
### Physics
21. **Q:** What is the force that pulls objects toward each other called?
**A:** Gravity
22. **Q:** What is the unit of force in the metric system?
**A:** Newton
23. **Q:** What type of energy is stored in a stretched rubber band?
**A:** Elastic potential energy
24. **Q:** What is the law that states an object at rest stays at rest?
**A:** Newton's First Law of Motion
25. **Q:** What do we call the energy of motion?
**A:** Kinetic energy
26. **Q:** What is the speed of light in a vacuum?
**A:** Approximately 299,792 kilometers per second
27. **Q:** What is the name of the phenomenon where light changes direction when passing from one medium to another?
**A:** Refraction
28. **Q:** What is the term for the measure of how much matter is in an object?
**A:** Mass
29. **Q:** What type of lens is thicker in the center than at the edges?
**A:** Convex lens
30. **Q:** What force opposes the motion of an object through a fluid?
**A:** Drag
### Earth Science
31. **Q:** What is the outer layer of the Earth called?
**A:** Crust
32. **Q:** What do we call molten rock beneath the Earth's surface?
**A:** Magma
33. **Q:** What is the process by which rocks break down into smaller pieces?
**A:** Weathering
34. **Q:** What is the term used for the movement of tectonic plates?
**A:** Plate tectonics
35. **Q:** What is the primary gas found in the Earth's atmosphere?
**A:** Nitrogen
36. **Q:** What do you call the layer of gases surrounding the Earth?
**A:** Atmosphere
37. **Q:** What scale is used to measure the magnitude of earthquakes?
**A:** Richter scale
38. **Q:** What is the term for a large body of salt water that covers most of the Earth's surface?
**A:** Ocean
39. **Q:** What process involves the movement of rocks and soil down a slope?
**A:** Erosion
40. **Q:** What is the term used for the study of weather?
**A:** Meteorology
### Astronomy
41. **Q:** What is the center of our solar system?
**A:** The Sun
42. **Q:** What planet is known as the Red Planet?
**A:** Mars
43. **Q:** What celestial body orbits the Earth?
**A:** Moon
44. **Q:** What is the name of our galaxy?
**A:** Milky Way
45. **Q:** What force keeps the planets in orbit around the sun?
**A:** Gravity
46. **Q:** Which planet is famous for its rings?
**A:** Saturn
47. **Q:** What is the term for a shooting star?
**A:** Meteor
48. **Q:** What do you call the study of celestial objects and phenomena?
**A:** Astronomy
49. **Q:** What is the largest planet in our solar system?
**A:** Jupiter
50. **Q:** What is the closest star to Earth (other than the Sun)?
**A:** Proxima Centauri
### Environmental Science
51. **Q:** What is the term for a species that is in danger of extinction?
**A:** Endangered species
52. **Q:** What do we call the gradual increase in Earth's average temperature?
**A:** Global warming
53. **Q:** What is the main greenhouse gas responsible for climate change?
**A:** Carbon dioxide (CO2)
54. **Q:** What do you call the variety of life in an ecosystem?
**A:** Biodiversity
55. **Q:** What is the process of converting waste materials into reusable materials called?
**A:** Recycling
56. **Q:** In which layer of the atmosphere does weather occur?
**A:** Troposphere
57. **Q:** What is a nonrenewable resource?
**A:** A resource that cannot be replenished in a human lifetime (e.g., fossil fuels)
58. **Q:** What type of energy is derived from the heat within the Earth?
**A:** Geothermal energy
59. **Q:** What is the term for the clearing of forests?
**A:** Deforestation
60. **Q:** What is the role of decomposers in an ecosystem?
**A:** To break down dead organic matter and recycle nutrients
### General Science
61. **Q:** What is the scientific method?
**A:** A systematic approach to problem-solving and experimentation.
62. **Q:** What are the three states of matter?
**A:** Solid, liquid, and gas.
63. **Q:** Who is known as the father of modern physics?
**A:** Albert Einstein.
64. **Q:** What instrument is used to measure temperature?
**A:** Thermometer.
65. **Q:** What is an element?
**A:** A substance that cannot be broken down into simpler substances.
66. **Q:** What do you call a change in the physical or chemical makeup of a substance?
**A:** Chemical change.
67. **Q:** What is heredity?
**A:** The passing of traits from parents to offspring.
68. **Q:** What type of bond involves the sharing of electron pairs between atoms?
**A:** Covalent bond.
69. **Q:** What is the process by which a caterpillar becomes a butterfly called?
**A:** Metamorphosis.
70. **Q:** What is the primary role of the chlorophyll in plants?
**A:** To absorb light for photosynthesis.
### Technology and Innovation
71. **Q:** What is renewable energy?
**A:** Energy from sources that are naturally replenished (e.g., solar, wind).
72. **Q:** What is the main function of a capacitor in electronics?
**A:** To store electrical energy.
73. **Q:** What is biotechnology?
**A:** The use of biological systems or organisms to develop products.
74. **Q:** What device is used to generate electricity from sunlight?
**A:** Solar panel.
75. **Q:** What type of wave is used in cell phone communication?
**A:** Radio waves.
76. **Q:** What is DNA?
**A:** Deoxyribonucleic acid, the molecule that carries genetic information.
77. **Q:** What technology allows for the communication through satellite systems?
**A:** Satellite communication.
78. **Q:** What is the purpose of antibiotics?
**A:** To kill or inhibit the growth of bacteria.
79. **Q:** What mechanical device converts rotational motion into linear motion?
**A:** A screw.
80. **Q:** What is a computer simulation?
**A:** A program that models real-world processes or systems.
### Math in Science
81. **Q:** What is the formula for calculating density?
**A:** Density = Mass/Volume
82. **Q:** What is the formula for calculating speed?
**A:** Speed = Distance/Time
83. **Q:** In a scientific graph, what does the y-axis typically represent?
**A:** The dependent variable.
84. **Q:** What is a hypothesis?
**A:** A testable prediction about the relationship between variables.
85. **Q:** How do you calculate the area of a triangle?
**A:** Area = (base * height) / 2
86. **Q:** What is the significance of a control group in an experiment?
**A:** It serves as a standard for comparison.
87. **Q:** What is the unit of measure for energy in food?
**A:** Calorie.
88. **Q:** What is the formula for calculating the force of gravity?
**A:** Force = Mass * Acceleration due to gravity (F = m*g).
89. **Q:** What is scientific notation?
**A:** A method of expressing numbers as a product of a number between 1 and 10 and a power of ten.
90. **Q:** What is the periodic table used for?
**A:** To organize elements based on their atomic number and properties.
### Miscellaneous Science
91. **Q:** What is the purpose of the ozone layer?
**A:** To protect Earth from harmful ultraviolet (UV) radiation.
92. **Q:** What is a black hole?
**A:** A region of space having a gravitational field so intense that no matter or radiation can escape.
93. **Q:** What do biomes refer to?
**A:** Large ecological areas on the Earth's surface, with flora and fauna (e.g., tundra, forests).
94. **Q:** What is nanotechnology?
**A:** The manipulation of matter on an atomic or molecular scale.
95. **Q:** What is augmented reality?
**A:** A technology that overlays digital information onto the real world.
This compilation of quiz questions and answers can provide a comprehensive overview for a junior high school science quiz competition!
### Biology
1. **Q:** What is the basic unit of life?
**A:** Cell
2. **Q:** What process do plants use to make their own food?
**A:** Photosynthesis
3. **Q:** What organ in the human body is responsible for pumping blood?
**A:** Heart
4. **Q:** What is the largest organ in the human body?
**A:** Skin
5. **Q:** Which part of the cell contains the genetic material?
**A:** Nucleus
6. **Q:** What is the function of the ribosome in a cell?
**A:** Protein synthesis
7. **Q:** What do you call an organism that makes its own food?
**A:** Autotroph
8. **Q:** What type of blood cell is responsible for fighting infections?
**A:** White blood cell
9. **Q:** What is the name of the process by which cells divide?
**A:** Mitosis
10. **Q:** What type of organism is a mushroom?
**A:** Fungus
### Chemistry
11. **Q:** What is the chemical formula for water?
**A:** H2O
12. **Q:** What is the pH level of pure water?
**A:** 7
13. **Q:** What is the process of a solid turning directly into a gas called?
**A:** Sublimation
14. **Q:** Which gas do plants take in during photosynthesis?
**A:** Carbon dioxide
15. **Q:** What is a solution that has a pH less than 7 called?
**A:** Acid
16. **Q:** What is the smallest unit of an element?
**A:** Atom
17. **Q:** What noble gas is used in neon signs?
**A:** Neon
18. **Q:** What do you call a substance that can change its state of matter?
**A:** Phase change
19. **Q:** What is the term for a chemical reaction that absorbs heat?
**A:** Endothermic reaction
20. **Q:** What do you call a reaction that releases energy?
**A:** Exothermic reaction
### Physics
21. **Q:** What is the force that pulls objects toward each other called?
**A:** Gravity
22. **Q:** What is the unit of force in the metric system?
**A:** Newton
23. **Q:** What type of energy is stored in a stretched rubber band?
**A:** Elastic potential energy
24. **Q:** What is the law that states an object at rest stays at rest?
**A:** Newton's First Law of Motion
25. **Q:** What do we call the energy of motion?
**A:** Kinetic energy
26. **Q:** What is the speed of light in a vacuum?
**A:** Approximately 299,792 kilometers per second
27. **Q:** What is the name of the phenomenon where light changes direction when passing from one medium to another?
**A:** Refraction
28. **Q:** What is the term for the measure of how much matter is in an object?
**A:** Mass
29. **Q:** What type of lens is thicker in the center than at the edges?
**A:** Convex lens
30. **Q:** What force opposes the motion of an object through a fluid?
**A:** Drag
### Earth Science
31. **Q:** What is the outer layer of the Earth called?
**A:** Crust
32. **Q:** What do we call molten rock beneath the Earth's surface?
**A:** Magma
33. **Q:** What is the process by which rocks break down into smaller pieces?
**A:** Weathering
34. **Q:** What is the term used for the movement of tectonic plates?
**A:** Plate tectonics
35. **Q:** What is the primary gas found in the Earth's atmosphere?
**A:** Nitrogen
36. **Q:** What do you call the layer of gases surrounding the Earth?
**A:** Atmosphere
37. **Q:** What scale is used to measure the magnitude of earthquakes?
**A:** Richter scale
38. **Q:** What is the term for a large body of salt water that covers most of the Earth's surface?
**A:** Ocean
39. **Q:** What process involves the movement of rocks and soil down a slope?
**A:** Erosion
40. **Q:** What is the term used for the study of weather?
**A:** Meteorology
### Astronomy
41. **Q:** What is the center of our solar system?
**A:** The Sun
42. **Q:** What planet is known as the Red Planet?
**A:** Mars
43. **Q:** What celestial body orbits the Earth?
**A:** Moon
44. **Q:** What is the name of our galaxy?
**A:** Milky Way
45. **Q:** What force keeps the planets in orbit around the sun?
**A:** Gravity
46. **Q:** Which planet is famous for its rings?
**A:** Saturn
47. **Q:** What is the term for a shooting star?
**A:** Meteor
48. **Q:** What do you call the study of celestial objects and phenomena?
**A:** Astronomy
49. **Q:** What is the largest planet in our solar system?
**A:** Jupiter
50. **Q:** What is the closest star to Earth (other than the Sun)?
**A:** Proxima Centauri
### Environmental Science
51. **Q:** What is the term for a species that is in danger of extinction?
**A:** Endangered species
52. **Q:** What do we call the gradual increase in Earth's average temperature?
**A:** Global warming
53. **Q:** What is the main greenhouse gas responsible for climate change?
**A:** Carbon dioxide (CO2)
54. **Q:** What do you call the variety of life in an ecosystem?
**A:** Biodiversity
55. **Q:** What is the process of converting waste materials into reusable materials called?
**A:** Recycling
56. **Q:** In which layer of the atmosphere does weather occur?
**A:** Troposphere
57. **Q:** What is a nonrenewable resource?
**A:** A resource that cannot be replenished in a human lifetime (e.g., fossil fuels)
58. **Q:** What type of energy is derived from the heat within the Earth?
**A:** Geothermal energy
59. **Q:** What is the term for the clearing of forests?
**A:** Deforestation
60. **Q:** What is the role of decomposers in an ecosystem?
**A:** To break down dead organic matter and recycle nutrients
### General Science
61. **Q:** What is the scientific method?
**A:** A systematic approach to problem-solving and experimentation.
62. **Q:** What are the three states of matter?
**A:** Solid, liquid, and gas.
63. **Q:** Who is known as the father of modern physics?
**A:** Albert Einstein.
64. **Q:** What instrument is used to measure temperature?
**A:** Thermometer.
65. **Q:** What is an element?
**A:** A substance that cannot be broken down into simpler substances.
66. **Q:** What do you call a change in the physical or chemical makeup of a substance?
**A:** Chemical change.
67. **Q:** What is heredity?
**A:** The passing of traits from parents to offspring.
68. **Q:** What type of bond involves the sharing of electron pairs between atoms?
**A:** Covalent bond.
69. **Q:** What is the process by which a caterpillar becomes a butterfly called?
**A:** Metamorphosis.
70. **Q:** What is the primary role of the chlorophyll in plants?
**A:** To absorb light for photosynthesis.
### Technology and Innovation
71. **Q:** What is renewable energy?
**A:** Energy from sources that are naturally replenished (e.g., solar, wind).
72. **Q:** What is the main function of a capacitor in electronics?
**A:** To store electrical energy.
73. **Q:** What is biotechnology?
**A:** The use of biological systems or organisms to develop products.
74. **Q:** What device is used to generate electricity from sunlight?
**A:** Solar panel.
75. **Q:** What type of wave is used in cell phone communication?
**A:** Radio waves.
76. **Q:** What is DNA?
**A:** Deoxyribonucleic acid, the molecule that carries genetic information.
77. **Q:** What technology allows for the communication through satellite systems?
**A:** Satellite communication.
78. **Q:** What is the purpose of antibiotics?
**A:** To kill or inhibit the growth of bacteria.
79. **Q:** What mechanical device converts rotational motion into linear motion?
**A:** A screw.
80. **Q:** What is a computer simulation?
**A:** A program that models real-world processes or systems.
### Math in Science
81. **Q:** What is the formula for calculating density?
**A:** Density = Mass/Volume
82. **Q:** What is the formula for calculating speed?
**A:** Speed = Distance/Time
83. **Q:** In a scientific graph, what does the y-axis typically represent?
**A:** The dependent variable.
84. **Q:** What is a hypothesis?
**A:** A testable prediction about the relationship between variables.
85. **Q:** How do you calculate the area of a triangle?
**A:** Area = (base * height) / 2
86. **Q:** What is the significance of a control group in an experiment?
**A:** It serves as a standard for comparison.
87. **Q:** What is the unit of measure for energy in food?
**A:** Calorie.
88. **Q:** What is the formula for calculating the force of gravity?
**A:** Force = Mass * Acceleration due to gravity (F = m*g).
89. **Q:** What is scientific notation?
**A:** A method of expressing numbers as a product of a number between 1 and 10 and a power of ten.
90. **Q:** What is the periodic table used for?
**A:** To organize elements based on their atomic number and properties.
### Miscellaneous Science
91. **Q:** What is the purpose of the ozone layer?
**A:** To protect Earth from harmful ultraviolet (UV) radiation.
92. **Q:** What is a black hole?
**A:** A region of space having a gravitational field so intense that no matter or radiation can escape.
93. **Q:** What do biomes refer to?
**A:** Large ecological areas on the Earth's surface, with flora and fauna (e.g., tundra, forests).
94. **Q:** What is nanotechnology?
**A:** The manipulation of matter on an atomic or molecular scale.
95. **Q:** What is augmented reality?
**A:** A technology that overlays digital information onto the real world.
This compilation of quiz questions and answers can provide a comprehensive overview for a junior high school science quiz competition!