Matter and its properties
Matter has two kinds of properties, ______________________ and ________________________.
General properties
Specific properties
True or false: Objects with opposite charges repel each other.
False: Objects with opposite charges attract each other.
An ___________________ is anything in nature that humans use to get energy.
Energy source
Ovens transform electrical energy into _______________ energy.
Thermal
Name four features that robots have.
Control unit
Sensors
Actuators
Structure
_________________ makes up everything that has mass and volume.
Matter
Name six forms of energy.
Kinetic energy, chemical energy, thermal energy, electrical energy, light energy, nuclear energy
True or false: Renewable energy sources do not cause any damage to the environment.
False: Renewable energy sources cause less pollution than fossil fuels, however their infrastructure can still cause harm to the environment.
Give four examples of ways that we can use energy responsibly.
Unplug electronic devices when you don't need them, turn lights off when you're not using them, use hot water responsibly, use transportation besides cars (walk, bike, public transport), use low-energy household appliances
True or false: The frame is the part of a robot that holds the sensors and the actuators.
True
What is density?
Density is the relationship between an object's mass and volume.
What types of energy does a fire have? (name two)
Thermal and light energy
What are two advantages of renewable energy sources?
They don't run out and they cause less pollution than fossil fuels.
What are two advantages of non-renewable energy sources?
We can use them to generate a lot of energy and we can transport and store the energy cheaply.
What is a robot?
A machine that we can program to interact with the environment and perform tasks.
What units of measurement do we use when measuring mass or volume?
We use grams (g) to measure mass and millilitres (mL) to measure volume.
What is an electric current?
The movement of electric charge through conductive objects (such as cables).
What energy source do thermal power stations use?
Coal
Why is it important to use hot water responsibly?
Because heating water takes a lot of energy.
In order for a plane to fly, the ______________ must be greater than the weight of the plane.
Lift
What is the difference between general properties of matter and specific properties of matter?
General properties cannot be used to distinguish between different types of matter. Specific properties can be used for this purpose.
What does photosynthesis do to light energy from the sun?
It transforms it into chemical energy.
What types of energy do solar panels use and where do they get that energy?
Solar panels use light and thermal energy that they capture from the sun.
What does the control unit of a robot do?
It recieves and processes information from the sensors and then sends instructions to the actuators.
What force do planes generate to overcome air resistance?
Thrust