Forms of Energy
What type of energy comes from the Sun and travels in waves?
Light energy
What is energy from the Sun called?
What is used for cooking and heating and is cheaper than oil?
Natural gas
What tiny particles have positive, negative or no electrical charge?
Protons, neutrons, and electrons
What kind of energy do most robots need to work?
Electrical energy
What type of energy is released when food is digested or fuel is burned?
Chemical energy
What kind of energy is generated using wind turbines?
Wind energy
What fossil fuel is drilled from the Earth and used to make plastics?
Oil / Crude oil
What is the name for the closed path with no gaps, electricity flows through?
Electric circuit
What is a robot?
A machine programmed to do tasks
What are the two types of mechanical energy?
Kinetic and potential energy
Which renewable source uses falling water to make electricity?
Hydraulic energy
What element is used in nuclear power plants?
Uranium
What device allows or stops the flow of electricity in a circuit?
Switch
Name a robot that we have studied in class used in INDUSTRY
Industrial welding robot
How do kinetic and potential energy work together in a moving roller coaster?
Kinetic energy increases as the coaster moves down, and potential energy increases as it climbs up.
Why is biomass considered renewable, and what makes it less environmentally friendly than other sources?
It comes from organic material that can grow back, but burning it releases greenhouse gases.
Compare the environmental impact of burning coal and using uranium to generate electricity.
Coal --> releases greenhouse gases and causes air pollution.
Uranium --> produces dangerous radioactive waste.
What increases or decreases the voltage of electricity in substations?
Transformer
What robot is used in MEDICINE?
Robotic legs
What's the definition of SOUND ENERGY?
Sound energy is a vibration which travels in the form of waves and can be heard.
How does geothermal energy work? Name one disadvantage.
It uses heat from inside the Earth, often from volcanic areas.
Disadvantage: It is limited to certain geographic areas / They have an environmental impact.
Why is it difficult to stop using fossil fuels, even though they damage the environment?
They are cheap, reliable, and already widely used in many systems, making change expensive and complex.
How does a simple electric circuit work to light a bulb, and what happens when it is open?
The battery sends current through the wire to the bulb; if the circuit is open, the electricity can't flow and the bulb won't light.
Imagine a hospital uses robots for surgery. What is an advantage and one serious disadvantage of using robots in medicine?
Advantages: greater precision / Operating in distance.
Disadvantage: machine malfunction could harm the patient.