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2025 IAPS P8
| Question | Answer |
|---|---|
| Ariana performed an experiment to find how water affected the growth of roses, she created the experiment and repeated the experiment multiple times, she also had her friend Lilly do the same experiment as well, did Lilly use replication or repetition? | replication |
| Daniel had an experiment that he repeated multiple times; repetition. why would he do this? | He would use repetition to try to reduce error for the most accurate results. |
| Rachel had an experiment with black and white tee-shirts, she noticed that the black tee-shirt on the sunny day is hotter than the white tee-shirt. What is the reaction between the shirt and light? | absorption. |
| Miranda was playing with her straw in a glass of water and noticed when the straw was inside the water it looked broken what is this an example of? | refraction. |
| Sally is conducting an experiment on how different surfaces effect computer airflow, but she feels she has made an error in her experiment, how can she validate her results after she has finished the experiment? | She can send it to another scientist to conduct the experiment |
| Sally is trying to test the effectivity of different dish soaps, but she feels that an abnormality has occurred in her experiment, how can she solve this issue while still conducting the experiment? | Use repetition. |
| Billy laid a mirror flat on the ground and shown a laser pointer on the mirror, and the ray from the laser pointer made a 27 degrees angle of incidence with the mirror, what is the degree of the reflected ray? | 27 degrees |
| A beam of light hits a mirror, and the reflected beam makes an 87 degrees angle with the mirror, what is the measure of the angle of incidence | 87 degrees |
| Alex and Ben are testing if plants growth is affected by different locations. Given same amount of water, sunlight, and soil. What is the independent variable? | The the different locations the plant grows in. |
| Gia and Emmo are testing to see if masses of balls effect of the speed of their fall. 2 balls that have different mass and dropped from same height. Each ball makes a crater when it hits the sand. What is the dependent variable. | The size of the crater in the sand |
| What are 2 benefits of a slinky model for energy wavelengths? | It is affordable, and it is easy to understand |
| What are 2 limitations of a solar system model? | It is not made to scale, and details of the planets |
| If you make a sound under water in a pool would your friend 1 who is under water or friend 2 who is sitting by the pool hear the sound first? | The friend under water would hear it first. |
| If you make a sound in space, why can’t others hear it? | Sound cannot travel in space. |
| Billy wanted to test how water evaporates with different water temperatures. He sets up the experiment with room temperature, hot, and cold. He measures how much time it takes the water to evaporate. What is the independent variable? | Independent variable = temperature of the water. |
| Billy wanted to test how water evaporates with different water temperatures. He sets up the experiment with room temperature, hot, and cold. He measures how much time it takes the water to evaporate. What is the dependent variable? | Dependent variable = time it takes the water to evaporate. |
| What are things that people who live in older houses do to make their houses more energy efficient? | Use efficient household appliances update windows and lights. |
| Your community is building a new school on a tight budget. The town planners do not want to buy energy efficient equipment for the school because it will cost more. How does science influence this decision? | Science can provide data on efficient appliances and cost savings. |
| How would an unsupported hypothesis still be useful to scientists? | It can lead to new investigations. |
| What is the purpose of creating a new hypothesis after the old one was not supported? | To test the results given by the first experiment. |
| What type of wave can be used in space? | Electromagnetic waves. |
| What is the difference between the waves radar use and the waves sonar uses? | Radar waves are electromagnetic waves, sonar waves are mechanical waves. |
| Emma and Alex are doing an experiment to see how different liquids affect browning of apples. The liquids they use are water, salted water, lemon juice, and milk. in this experiment, what is the dependent variable? | The amount of browning of the apple slice |
| Which two waves on the EM spectrum have a lower and higher frequency than visible light? | infrared and ultraviolet. |
| What is a helpful way to use x-rays? | To view bone without cutting tissue. |
| Ellie is studied volcanos, she discovers that when the lava at the top cools it sinks letting the hotter material rise what type of heat transfer is this? | convection. |
| When the metal spoon is placed in a hot cup of tea. The temperature of the spoon increases. What form of heat transfer is this? | conduction. |
| Explain the relationship of energy level and wavelength? | A longer wavelength means a lower energy level |
| Explain the energy transformations when turning on a laptop. | Chemical > electrical > light, sound, thermal |
| What kind of energies are used in baking a batch of cookies in an over, describe 2 types of transformation. | Electrical to Thermal and Thermal to Kinetic |
| When the frequency is higher what does that tell us about the energy level? | If the frequency is higher than the energy level is higher. |
| Given radio waves have the lowest energy level what does this tell us about the frequency? | The radio waves will have the lowest frequency. |
| Stretching or compressing is based on the type of energy, what kind of energy is this? | This is elastic energy |
| When you turn on a battery-powered radio what energy transformations occur? | Chemical -> Electrical -> Sound vibrations |
| Does the total amount of energy in a system like a roller coaster? Explain. | No, the energy stays the same due to the law of conservation of energy. |
| What is the relationship between GPE and KE as a ball is dropped from 3 meters? | GPE is converted to KE. |
| Radio Waves have the longest wavelength on the EM Spectrum. How does this effect its energy? | It has the lowest energy |
| Visible light has a shorter wavelength than microwaves, what does this mean? | Visible light has a higher frequency and higher energy level. |
| If a cart was on a hill and rolled down, in what position would the cart have the most GPE? | On the top of the hill. |
| What will happen to the GPE in a cart if the KE increases? | The GPE will decrease. |
| What is the main type of unusable energy that comes from frictional forces | Thermal energy. |
| If an object was placed on a slanted platform, what type of force prevents it from sliding down? | Frictional force. |
| Microwaves are longer ultraviolet rays, how do the energy levels compare? | Ultraviolet rays have a higher frequency level than microwaves |
| Bella was outside working in her garden. When she came inside, she was sun burnt. What type of EM radiation did she encounter? | ultraviolet radiation. |
| Yazzy was at the doctor, and she might have broken her leg. the doctor used a machine to see if she did. What type of EM radiation was used? | x-rays |
| Brady was holding a cube of ice in his hand. he noticed that the ice was melting in his hand. describe the flow of thermal energy as the ice melts. | The thermal energy travels from his hand to the ice. |
| Isa was in a hot tub and noticed steam rising into the air. What type of thermal energy transfer is she observing? | Convection |
| What is the difference of wavelength between a microwave and an x-ray? | Microwave = long wavelength, x-ray = short wavelength |
| What is the transformation of energy when you hit a baseball? | Chemical energy (body) to Kinetic Energy |
| What type of forces would be observable when a cart rolls down a hill? | Gravitational force, friction |
| If a man walks 100 feet a minute at a constant speed, what will the graph look like? | An upward sloped line |
| If a car is slowly getting faster and faster (accelerating) what would the graph look like? | An upward curved line |
| If Line A represents someone moving 100 feet a minute and Line B represents someone moving 200 feet a minute, which line is steeper? | Line B is steeper |
| What are 2 factors that affect friction? | Texture of surface and the Surface Area |
| Why would you want to increase friction while driving a car? | To keep the car from slipping. |
| If you walk at 5 M/S for 20 seconds, how far will you go? | 100 meters |
| A book is lying still on a table, what kind of force would this be? | A balanced force. |
| if a group of kids are playing tug-a-war and the kids on the right are pulling with 10n of force and the group on the left are pulling with 12n of force, what's the net force? | 2 n to the left. |
| What is the total net force of an object if 15n is pushing to the left and 15n pushing to the right? | 0 Newtons |
| How does distance affect the pull of gravity between two objects? | The farther away the objects are, the weaker the gravitational pull. |
| How does gravity effect the weight of an object? | When gravity increases, weight increases with it. |
| What tool would be used to measure mass? | a balance |
Created by:
Brewermms
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