Flashcards in Assessment 4 Deck (50)
Name a fuel used in cars
Name a renewable source of energy
Wood, solar power.
Name a fuel used in power stations
Name a solid fossil
In what unit is energy measured
Kilo joules (J)
What is potential energy?
Energy that is stored. There is gravitational potential energy and elastic potential energy.
What is thermal energy?
Thermal energy is basically heat energy. If heat is released from something it means that Thermal energy is released from it
What is kinetic energy?
Kinetic energy is energy from movement. For example when a car drives there is kinetic energy from the movement
What is electrical energy?
Electrical energy is energy what comes from an electrical circuit. It is fuelled by a batery or a cell.
What is chemical energy?
Chemical energy is energy that comes from chemicals. For example the chemicals in batteries release chemical energy to create electrical energy
What is light energy?
Light energy is the energy that comes from a light. It reflects off things or can be absorbed or go through things. For example the light energy from a light bulb
What does a watt (W) measure?
A watt measures power, equivalent to one joule per second. Corresponding to the rate electrical energy is used.
How many volts are passed along the cables of the national grid?
500,000 volts are passed along the national grid cables
How many volts are supplied to our homes from the national grid?
230 to 240 volts
What is mass?
Mass is the matter of something or someone
What is weight?
Weight is the force of gravity pulling you down towards the centre of the Earth.
What is the equation to calculate weight?
Weight=mass multiplied by gravity
What unit is mass measured in?
Mass is measured in kg
What unit is weight measured in?
Weight is measured in Neutons (N)
Name 2 negative impacts caused by fossil fuels
1.It causes global warming because of the carbon dioxide released
2. They are a non renewable source
How are ammeters and voltmeters connected
The are connected in parallel
What is an orbital period?
is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun
How long does the Earth take to spin on its axis once
It takes 23 hours and 56 mins
How long does it take for the moon to spin on its axis once
What happens to the temperature of planets as they get nearer to the sun
The temperature increases
Why is there warmer weather in Ireland in the summer?
There is more hours of daylight and the sun is at an angle where the sun is concentrating more rays into a smaller area.
When do we expect to see no moon?
When there is an eclipse (when another planet goes in front of the moon, blocking our view.)
What is a constellation
A group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.
What is a star?
a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.