Natural Science · 5.º de Primaria · Con las respuestas
Unit 5: We care about matter
El modelo A con la respuesta de cada pregunta debajo, para corregirlo en casa o ver dónde estaba cada cosa.
NombreFechaNota5.º de Primaria · Natural Science · Unit 5: We care about matter · Modelo A
1
Mass, volume and density
3 puntosThe amount of matter in an object, measured in kilograms, is its…( mass · volume · density )
Respuesta: mass
The space an object takes up, measured in litres or cm³, is its…( mass · volume · density )
Respuesta: volume
How much mass there is in a certain volume is the…( mass · volume · density )
Respuesta: density
A piece of wood floats in water because…
Respuesta: it is less dense than water
A stone sinks in water because…
Respuesta: it is denser than water
2
Forces
3 puntosThe force that pulls everything towards the centre of the Earth:( gravity · friction · magnetism )
Respuesta: gravity
The force that slows down a ball rolling on the grass:( gravity · friction · magnetism )
Respuesta: friction
The force that attracts iron nails to a magnet:( gravity · friction · magnetism )
Respuesta: magnetism
Forces can change the speed, direction or shape of an object.( True · False )
Respuesta: True
3
Vehicles and aircraft
2,5 puntosMost cars move thanks to…
Respuesta: an engine
What keeps a plane up in the air?
Respuesta: the lift produced by the air moving over its wings
A sailing boat moves thanks to…
Respuesta: the wind pushing the sails
4
Measuring
1,5 puntosWe measure mass with…
Respuesta: a balance or scales
+
Challenge
No cuenta para la notaThis one doesn't count for your mark. It's for champions!
Which is denser: 1 kg of iron or 1 kg of feathers?
Respuesta: iron