Grade 4 Science Topic 1 Lesson 4

the build up of an electric charge on an object

• static electricity

• atom

• nucleus

• proton

the smallest particle of an element

• nucleus

• atom

• proton

• neutron

the central part of an atom

• proton

• attract

• nucleus

• electron

the part of an atom that has a positive charge

• proton

• repel

• electric current

• source

the part of an atom that has a neutral (no) charge

• atom

• static electricity

• repel

• neutron

the part of an atom that has a negative charge

• repel

• electron

• resistor

• source

a material that energy can easily flow through

• insulator

• proton

• conductor

• nucleus

a material tat does not allow energy to flow through easily

• source

• electron

• nucleus

• insulator

to pull together

• attract

• repel

• electric current

• source

to push apart

• attract

• neutron

• repel

• source