Glossary

Question 1

Define ACCELERATION

Answer 1

change in velocity per second (in metres per second squared m/s2)

Question 2

define DECELERATION

Answer 2

Change of velocity per second when an object slows down

Question 3

Define DISPLACEMENT

Answer 3

Distance in a given direction

From “dis” place to “dis” place

Question 4

Define GRADIENT (Of a Straight Line Graph)

Answer 4

Change of the quantity plotted on the Y-axis divided by the changeof the quantity plotted on the X-axis

Question 5

Define TANGENT

Answer 5

A straight line drawn to touch a point on a curve so it has the same gradient as the curve at that point .

Question 6

Define VELOCITY

Answer 6

Speed in a given direction ( in metres /second, M/S)

(Velocity = Velociraptor. 1 is enough do not square. Acceleration is squared because you want to be TOO (2) fast for them to catch you)

Question 7

Define BIOFUEL

Answer 7

Any fuel taken from living or recently living materials such as animal dung, plant products. ( fossil fuels are older and a limited resource, biofuels can be grown, harvested reliably)

Question 8

Define CARBON NEUTRAL

Answer 8

A biofuel from a living organism that takes in as much carbon dioxide from the atmosphere during its lifetime as is released when burnt.

Question 9

Define GEOTHERMAL ENERGY

Answer 9

Energy released by radioactive substances deep within the Earth

Imagine Dragons singing Radioactive deep within the earth and the concert is really hot and gives off good energy

Question 10

Define NATIONAL GRID

Answer 10

The network of cables and transformers used to transfer electricity from power stations to consumer ( homes, shops, offices, factories etc) for the nation.

Bumblebee is a transformer and cable tv send the film everywhere. Cables and transformers =national grid

Question 11

Define NUCLEAR FUEL

Answer 11

Substance used in nuclear reactors that releases energy due to nuclear fission

Nuclear fuel creates a reaction so is found in reactors ( not your home or Lidl!) it makes energy due to fission. Coke in Lidl = fizz , nuclear fuel = fission.

Question 12

Define NUCLEUS

Answer 12

Tiny positively charged object made of protons and neutrons at the centre of every atom

Question 13

Define REACTOR CORE

Answer 13

The thick steel vessel used to contain fuel rods, control rods and the moderator in a nuclear fission reactor.

Reactor core is like a reddit forum, some add fuel to the fire others react and moderators keep it under control stop explosions

Question 14

Define RENEWABLE ENERGY

Answer 14

Energy from natural sources that is always being replenished so it never runs out.

Water, wind, solar, biofuels, geothermals, hydroelectricity, tides.

Question 15

Define DRIVING FORCE

Answer 15

The force of a vehicle that makes it move (aka Motive Force)

Whats the driving force behind the project? Whats your MOTIVE- ation

Question 16

Define FORCES

Answer 16

A force (in Newtons, N) can change the motion of an object

Change the motion, force can!

Question 17

Define FREE-BODY FORCE DIAGRAM

Answer 17

A diagram showing that shows the forces acting in an object without any other objects or forces shown

The body is free from forces/objects - Free-body
Showing the force used

Question 18

Define FRICTION

Answer 18

The force opposing the relative motion of 2 solid surfaces in contact

Question 19

Define MAGNITUDE

Answer 19

The size or amount of a physical quantity

Like earthquakes magnitude
Magnitude of the consequences if actions

Question 20

Define NEWTON’S FIRST LAW OF MOTION

Answer 20

If the resultant force on an object is zero, the object stays at rest if it is stationary , or it keeps moving with the same speed in the same direction.

If the firce is zero/nithing , nothin* changes stays still ir keeps moving same as before

Question 21

Define NEWTON’S THIRD LAW OF MOTION

Answer 21

When two objects interact with each other (collide) they will exert an equal and opposite forces on each other

Any action has an equal and opposite reaction

Question 22

Define PARALLELOGRAM OF FORCES

Answer 22

A geometrical method used to find the resultant of two forces that do not act along the same line

Imagine a rectangle and the top and bottom move in opposite directions turning it into a parallelogram

Question 23

Define RESULTANT FORCE

Answer 23

A single force that has the same effect as all the forces acting on the object.

If you have 75 N pushing right and 50 N pushing left on an object the resultant force is 25 N pushing right

Question 24

Define SCALAR

Answer 24

A physical quantity such as mass or energy, that has magnitude ONLY (unlike a vector which has magnitude and direction)

Question 25

Define VECTOR

Answer 25

a vector is a physical quantity, like displacement or velocity, that has a magnitude AND direction ( unlike a scalar that has magnitude only).