P_________ changes are changes that affect some properties of matter but no new substance is produced.
Physical
TRUE or FALSE: We can measure the mass of a solid object by weighing it on a scale.
True
T_________ energy is the energy involved in heat being transferred from one object to another one at a different temperature.
Thermal energy
C________ consists of squeezing something so that it becomes smaller.
Compression
TRUE or FALSE: Pure substances are made up of TWO TYPES of matter.
False (one)
N_______ materials are the materials in our environment that are found in nature.
Natural
C__________ changes produce new substances.
Chemical
What formula do we use to compute density?
Density (d) = Mass (m) / Volume (V)
TRUE or FALSE: Carbon dioxide is an example of SOLID.
False
E__________ is anything that is capable of causing objects to change.
Energy
TRUE or FALSE: Ice is an example of LIQUID.
False
The e_________ of a solid is measured by how easily it recovers its original shape when it is deformed.
elasticity
TRUE or FALSE: A ball is an example of SOLID.
True
M___________ materials are materials that we make by modifying natural materials.
man-made
P____________ is made mainly from petroleum and is used to make lots of different things from bags and computers to clothes.
Plastic
TRUE or FALSE: It ONLY takes five years to turn matter to coal and other fossil fuels.
FALSE (millions of years)
TRUE or FALSE: Kinetic energy is the energy of SOUND.
False (motion)
Matter can be either a pure substance or a m__________.
mixture
Physical or chemical change? ➤Tearing paper
Physical
What are the two main types of force?
Contact forces, action-at-a-distance forces
The h________ of a solid is determined by how resistant it is to being scratched, such as a diamond or cardboard.
hardness
They haven't got a fixed shape or volume, so they can be compressed. They tend to expand to occupy all available space.
Gas
TRUE or FALSE: We can measure the MASS of a solid object by putting it in liquid in a graduated cylinder and observing how much the water level increases by.
False
What are the FIVE specific properties of matter?
hardness, tenacity, elasticity, viscosity, compressibility
Give an example of SOLID.
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What are the four main principles of aerodynamics?
weight, lift, thrust, and drag
TRUE or FALSE: You can use force to move an object that is not moving, push an object to make it go faster, or make a moving object slow down.
True
TRUE or FALSE: Gases expand to occupy all available space.
True
Give an example of GAS.
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TRUE or FALSE: Mixtures are made up of two or more pure substances (two or more types of matter).
True
The materials we use, such as copper wires, plastics and fuels, are made of different types of matter and we call them s____________.
Substances
D______ is a specific property that measures how much matter is packed into an object.
Density
Give at least two examples of renewable energy sources
biomass, solar energy, wind energy, flowing water
TRUE or FALSE: The heat at a nuclear power plant is generated by uranium, a radioactive substance.
True
Physical or chemical change? ➤Rusting iron
Chemical
Give two examples of non-renewable energy sources
fossil fuels, nuclear fuels
A property of matter which is the space an object occupies.
Volume
A property of matter which tells us how much matter is in an object.
Mass
TRUE or FALSE: Oxygen is an example of GAS.
True
M__________ is anything that has volume and mass, so it has weight and occupies space in the Universe.
Matter
TRUE or FALSE: Windmills convert wind energy into electric energy.
True
These are energy sources that are used up faster than nature can produce them.
Non-renewable
What are the two types of changes (matter)?
Physical, Chemical
C__________ forces happen when two objects physically touch (or come in contact with) each other.
Contact forces
C__________ energy is the energy stored in matter. This energy can be released or consumed during a chemical reaction.
Chemical energy
H___________ mixtures: They have a uniform composition. You cannot visibly see the different types of matter that are present.
Homogeneous
TRUE or FALSE: The Universe has matter in its FIVE different states.
False
T___________ is the resistance that a solid has to be broken when it is hit. For example, glass is hard, but it breaks easily.
Tenacity
K_______ energy is the energy of motion.
Kinetic energy
A______________forces happen when two objects interact with each other without touching.
Action-at-a-distance forces
Physical or chemical change? ➤ Ice melting
Physical
TRUE or FALSE: You can change the shape of a block of modelling clay to create something new.
True
N_________ energy can be produced naturally or can be produced by us. It is produced by using uranium, a radioactive substance.
Nuclear energy
Natural materials are classified depending on their origin: a_________, v_________ or m_________
animal, vegetable or mineral
When one object exerts effort on another, we say that these objects i________.
interact
What are the two types of energy sources? N_________ and r____________
non-renewable, renewable
L__________ energy, or light, is given off by lamps, candles, sun, etc.
Luminous energy
A state of matter that has got a fixed shape and volume. (S _ _ _ _ )
Solid
C_____________ is used in construction and is an artificial material that we create using natural materials such as rocks and sand.
Cement
These energy sources can be replaced as we use them.
renewable
The Universe has matter in its t________ different states. (How many?)
three (solid, liquid, gas)
TRUE or FALSE: Thermal energy is the energy produced by electrical charges.
FALSE (electrical energy)
E_________ energy is the energy associated with electric charges and their movements.
Electrical energy
TRUE or FALSE: Matter DOESN'T have volume, mass, and weight.
False
TRUE or FALSE: Water is an example of GAS.
False
TRUE or FALSE: Solid is a state of matter that DOESN'T HAVE FIXED shape and volume.
False
TRUE or FALSE: We must be responsible with the things we make because not all materials are sustainable.
True
P_________ is an artificial material that we create using a natural material, wood.
Paper
We can measure the v_______ of a solid object by putting it in liquid in a graduated cylinder and observing how much the water level increases by.
Volume
Give an example of LIQUID.
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Aerodynamics is the force that the air exerts over a body when this is in movement trying to go through air.
Aerodynamics
The v_______ of a liquid is its resistance to flow.
viscosity
It is energy from the Sun (luminous and thermal) and it can be used to generate electrical and thermal energy.
Solar energy
They haven't got a fixed shape, but they have got a fixed volume. That's why they can flow and change their shape depending on the container they are in.
Liquid
TRUE or FALSE: Liquids HAVE GOT a fixed shape, and they HAVEN'T GOT a fixed volume.
False
H_____________ mixtures: They do not have a uniform composition. You can visibly see the different types of matter that are present.
Heterogeneous