Lets review

Lets review

What did we learn in Grade 3

• Forces and Motion

• Electricity and Magnetism 

• Plants

• Animals

• Survive the environment

• Change the environment

• Weather Impacts

What is position? It is location of an object 

Distance

• Amount of space between two objects or places

• Measure in Meter, cm, mm, km

Direction

• Tell us which way a line points from one object of place to another.

• We use words like North, East, South, west , up , down, left , right 

• Google maps are used for directions

Motion

• Change of position

• Straight line, round and round, back and forth, zig zag

Speed

• How fast or slow something move

• We need distance and time to find out speed

Forces

• Push and pull 

Balanced and unbalanced forces

• Balanced forces means equal amount of force on both sides. Object will not move if forces are balanced.

• Unbalanced forces means forces are different on each side and object will move.

Friction (force that slow down moving objects)

• Fricition is a force that slow down moving objects.

• It is produced when two objects are rub together. 

Multiple Choice

Distance is

• How fast or slow something moves

• amount of space between two objects

Multiple Choice

Friction will

• speed up objects

• Slow down objects

Multiple Choice

North east west south describe

• Direction

• Speed

Electricity and Magnetism 

Electric charge 

• Charges can be positive and negative 

• Attract : Opposite charges attract 

• Repel: Same charges repel

Static electricity 

• A build up of electric charge 

Electric current

• Flow of charged particles is called electric current

• Electric circuit

Magnetism 

• A magnet is made up of material that can objects made of cobalt, steel, iron, nickel. 

• It has two poles North and South

• Same poles repel each other

• Opposite pole attract each other.

• Magnetic field is the area around a magnet where its force can attract or repel.

Multiple Choice

Static electricity is

• Moving charges

• Build up charges

Multiple Choice

Electric current is

• Charges not moving

• Charges moving

Multiple Choice

Same charges like positive and positive

• Attract

• Repel

Multiple Choice

The two poles of magnet are called

• North and West

• North and east

• North and South

Observing weather

Weather

• Weather is what the air is like outside.

• Atmosphere is the blanket of gases and tiny bits of dust that surround the Earth.

Temperature

• Temperature is how hot or cold something is.

• Thermometer is used to measure temperature.

How do we measure?

• For rain we use rain gauge

• For wind we use weather vane

Climate and seasons

• Pattern of weather in a certain place

• Seasons are times of the year with different weather patterns.

Multiple Choice

What is thermometer used for?

• Measure rain

• measure how hot or cold something is

Multiple Choice

Climate and seasons are same

• True

• False

Multiple Choice

There are 5 seasons

• True

• False

Multiple Choice

The climate of a desert is hot and dry.

• True

• False