🔬 Science

Life Science

1. What is the function of the cell membrane? (To produce energy | To control what enters and exits the cell | To store genetic information | To make proteins)
2. What organelle contains the cell (Mitochondria | Nucleus | Ribosome | Vacuole)
3. What is the process by which cells divide to make exact copies? (Meiosis | Mitosis | Photosynthesis | Respiration)
4. Which type of cell lacks a nucleus? (Eukaryotic | Prokaryotic | Plant cell | Animal cell)
5. What is cellular respiration? (Breathing air into the lungs | The process of converting glucose and oxygen into energy | Plants making food | Cell division)
6. What are the products of photosynthesis? (Carbon dioxide and water | Glucose and oxygen | ATP and carbon dioxide | Water and sunlight)
7. What is homeostasis? (Cell division | The maintenance of stable internal conditions | The immune response | Energy production)
8. In a food web, what happens to energy as it moves to higher trophic levels? (It increases | It decreases (about 10% transfers) | It stays the same | It doubles)
9. What is natural selection? (Humans choosing which organisms survive | Organisms with favorable traits surviving and reproducing more | Random changes in DNA | The study of fossils)
10. What is biodiversity? (The variety of life in an ecosystem | The number of plants only | How fast organisms grow | The size of a habitat)
11. What is symbiosis? (Competition between species | A close relationship between two different species | Predator-prey relationships only | Animals living alone)
12. What is the role of decomposers in an ecosystem? (To hunt prey | To break down dead matter and recycle nutrients | To produce oxygen | To provide shelter)

Earth Science

1. What type of plate boundary creates mountains? (Divergent | Convergent | Transform | Stationary)
2. What is the rock cycle? (Rocks rolling downhill | The continuous process of rock formation and transformation | How rocks are mined | The age of rocks)
3. What causes ocean tides? (Wind | The gravitational pull of the moon and sun | Underwater volcanoes | Temperature changes)
4. What is the greenhouse effect? (Growing plants in greenhouses | Gases trapping heat in Earth | The color of the sky | Reflection of sunlight)
5. What causes the seasons on Earth? (Distance from the sun | Earth | The moon | Solar flares)
6. What is weathering? (The forecast for rain | The breaking down of rocks by natural processes | Wind speed measurement | Temperature changes daily)
7. What layer of the atmosphere contains the ozone layer? (Troposphere | Stratosphere | Mesosphere | Thermosphere)
8. What is a watershed? (A type of dam | An area of land where all water drains to a common point | A waterfall | Underground water)
9. How do fossil fuels form? (From volcanic activity | From ancient organisms compressed over millions of years | From meteorite impacts | From ocean evaporation)
10. What is the Coriolis effect? (Ocean currents getting warmer | Deflection of moving objects due to Earth | Mountains blocking wind | The moon affecting tides)
11. What causes a lunar eclipse? (The moon blocking the sun | Earth | The moon moving away from Earth | Clouds covering the moon)
12. What is the difference between weather and climate? (They are the same thing | Weather is short-term; climate is long-term patterns | Climate is daily; weather is yearly | Weather applies to land; climate to oceans)
13. What is convection? (Heat transfer through direct contact | Heat transfer through fluid motion (rising warm, sinking cool) | Heat transfer through radiation | Heat loss to space)

Physical Science

1. What is the difference between mass and weight? (They are the same | Mass is amount of matter; weight is gravitational force on mass | Weight is constant; mass changes | Mass is measured in pounds)
2. What is density? (How heavy something is | Mass per unit volume | The size of an object | Temperature of matter)
3. What happens during a chemical change? (Shape changes only | New substances with different properties are formed | Size changes only | Temperature stays the same)
4. What is an element? (A mixture of substances | A pure substance made of one type of atom | A compound | Any solid material)
5. What is the law of conservation of mass? (Mass can be created | Mass cannot be created or destroyed in a chemical reaction | Mass always increases | Mass depends on gravity)
6. What is kinetic energy? (Stored energy | Energy of motion | Heat energy only | Electrical energy)
7. What is potential energy? (Energy of motion | Stored energy due to position or condition | Sound energy | Light energy)
8. What is Newton (Force equals mass times acceleration | Objects stay at rest or in motion unless acted upon by a force | Every action has an equal and opposite reaction | Gravity pulls objects down)
9. What type of wave requires a medium to travel? (Electromagnetic waves | Mechanical waves | Light waves | Radio waves)
10. What is frequency? (How loud a sound is | The number of wave cycles per second | The height of a wave | The speed of a wave)
11. What is an electric circuit? (A battery | A closed path through which electricity flows | A light bulb | A magnet)
12. What is thermal energy? (Energy from motion | Total kinetic energy of particles in matter | Electrical energy | Chemical energy)
13. How does heat transfer by conduction? (Through fluid movement | Through direct contact between particles | Through electromagnetic waves | Through empty space)

Scientific Inquiry

1. What is a hypothesis? (A proven fact | A testable prediction or explanation | The final conclusion | A measurement)
2. What is the control group in an experiment? (The group that is changed | The group that is not changed, used for comparison | The largest group | The group with the best results)
3. What is the independent variable? (What you measure | What you change or manipulate | What stays constant | The hypothesis)
4. What is the dependent variable? (What you change | What you measure or observe in response | A constant | The control)
5. Why should experiments be repeated? (To use more materials | To ensure results are reliable and not due to chance | To take more time | To change the hypothesis)
6. What is a scientific theory? (A guess | A well-tested explanation supported by evidence | The same as a hypothesis | An opinion)
7. What should you do if your data doesn (Change your data | Accept results and revise or reject your hypothesis | Ignore the results | Stop the experiment)
8. What is qualitative data? (Numerical measurements | Descriptive observations (color, texture, smell) | Temperature readings | Weight measurements)
9. What is quantitative data? (Descriptions of appearance | Numerical measurements | Opinions | Predictions)
10. Why are graphs useful in science? (They make reports longer | They help visualize patterns and relationships in data | They are required by law | They replace experiments)
11. What is peer review? (Friends checking homework | Other scientists evaluating research before publication | A type of experiment | Reading science books)
12. What makes a good scientific question? (It can be answered with yes or no | It can be investigated through observation and experimentation | It asks about opinions | It has an obvious answer)