What are 3 steps scientists might use when designing an investigation to solve a problem? Steps of a Scientific Investigation Identify a research question or problem. Form a hypothesis. Gather evidence, or data, to test the hypothesis. Analyze the evidence. Decide whether the evidence supports the hypothesis. Draw conclusions. Communicate the results. How does invention […]
What simple machine is a mechanical pencil?
What simple machine is a mechanical pencil? What is a compound machine? This is a machine that uses two more more simple machines. A mechanical pencil sharpener is a good example. You turn the handle (wheel and axle) and the two cutting screws sharpen the pencil. What type of simple machine is a pen? levers […]
Where did Gothic style architecture originated from?
Where did Gothic style architecture originated from? France Why was the Gothic style invented? The original Gothic style was actually developed to bring sunshine into people’s lives, and especially into their churches. The Gothic grew out of the Romanesque architectural style, when both prosperity and relative peace allowed for several centuries of cultural development and […]
Is Half Life radioactive decay?
Is Half Life radioactive decay? Half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive … How long […]
Is flour and water colloid or suspension?
Is flour and water colloid or suspension? Flour in water, like other liquids that need to be “shaken well before using”, are called suspensions. Muddy water taken from a swamp is another example. Heterogeneous mixture • Separates into layers over time. Filters can separate particles that make up a suspension. What is the solution suspension […]
Which process is used to manufacturing plastic pipes?
Which process is used to manufacturing plastic pipes? Pipes are first and foremost produced through an extrusion process. Inside the extruder barrel the material is heated up to the melting point around 200°C by electricity and the friction in the screw system. The melted material is pushed through a cavity, called a die-head and thereby […]
What are the types of aviation fuel?
What are the types of aviation fuel? Aviation Fuels: Jet Fuel, Aviation Gasoline (Avgas), Jet B, Biokerosene. Aviation fuels are fuels used for aircraft propulsion. A basic distinction is made between four different aviation fuels: Jet fuel (Jet A-1, kerosene) How do you identify different grades of aviation fuel? Grades of aviation gasoline are identified […]
Why do different places experience different weather and climate?
Why do different places experience different weather and climate? Different parts of the Earth have different climates because of different amounts of heat received from the Sun. Some climates have different seasons and there may be little or much variation in precipitation and temperature. How does extreme weather affect climate change? Scientific studies indicate that […]
How do you politely ask for something urgent?
How do you politely ask for something urgent? ‘As Soon As Possible’ Synonyms “… by [date and time] because [reason]” “When you have a chance [in the next day, before tomorrow, this week]” “I apologize for the urgency, but could you please [do X, send me Y, complete Z] at your soonest possible convenience?” “EOD” […]
What can a temperature sensor be used for?
What can a temperature sensor be used for? A temperature sensor is an electronic device that measures the temperature of its environment and converts the input data into electronic data to record, monitor, or signal temperature changes. There are many different types of temperature sensors. What are types of temperature Sensors? There are four types […]