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Gravity


  • Gravity = force that attracts all masses
  • Earth and moon attracted by gravity = keeps moon
    in its orbit
  • Earth and sun = bigger force of gravity.
  • Bigger
    object = stronger the force of gravity.
  • Further the distance between objects = weaker gravitational attraction.
  • Mass = amount of matter/stuff in an object, which never changes no matter where in the universe.
  • Weight = caused by the pull of gravity , which is different depending where you are in the universe
  • Weight = force = Newtons
  • Mass = not a force = kilograms
  • W (N) = m (kg) X g (N/kg)
  • Weight = caused by the = mass X gravitational field strength
  • Weight = caused by the = mass X gravitational field strength
  • g = strength of the gravity. Value is different for different planets
  • on EARTH g= 10N/kg

 

How long have you…? (present perfect 4) Exercises


 

improve-tution1

 

Use the information given to create questions beginning with ‘How long…?’

• It is snowing.

• The weather is shining.

• John and Kate are married.

• My brother has gone on holiday.

• My aunty and uncle live in Canada.

• My sister is a teacher.

• I work at the chemist.

• I’ve known Susan since I was a baby.

• Jonathan is learning to speak to Mandarin.

 
 

 

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Fill in the missing gaps in the sentences using the present perfect (=has/have + past participle)

• I have known Kate a long time.

• My brother has been playing the piano he was 11 years old.

• My mum and dad on holiday to America. They

gone since last Sunday.

• I Ben and Emma since primary school.

We to the same primary and secondary school.

• My sister learning to speak French because she
is going to France next month.

 

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Use the appropriate words in the missing gaps.
 

have you lived       lives      to

has been       works        have known

I have bought       have worked.

• My sister in Spain. She is studying Spanish

with her friend Rosie. I Rosie since I was 5.

• Spencer like with Jamie. They have worked

together for 2 years.

• How long in Australia?

• a new dress for prom.

• He to Thorpe park.

 

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Challenge: Create 4 of your own questions beginning with ‘How long……?’

1.

2.

3.

4.

 

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