Y7 Christmas homework

Task 1 - Use BBC bitesize to take 3 pages of notes on the following topics

a. Bar Charts and Line Graphs (https://www.bbc.co.uk/education/guides/zrg4jxs/revision/1)

b. Diffusion (http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/behaviour_of_matter/revision/4/)

c. Weight and Gravity (http://www.bbc.co.uk/bitesize/ks3/science/energy_electricity_forces/forces/revision/3/)

Task 2 - Complete the BBC bitesize quizzes on the 3 topics you have made notes on from BBC bitesize Repeat the quizzes until you achieve 100%, you will be tested on these topics in January!

Task 3 - Complete the 6 mark questions in your exercise books

a. Specialised Cellsb. Particlesc. Forces

Task 4 - Complete the exam-style questions in your exercise books

a. Cellsb. Graphsc. Gravity

Y7 Cells

Y7 B1.1 Cells

In this question you will be assessed on using good English, organising information clearly and using specialist terms where appropriate.

Give an example of one specialised animal cell and one specialised plant cell, explaining how each cell is specialised for its function. (6)

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Level 1 (1-2 marks) Level 2 (3-4 marks) Level 3 (5-6 marks)

State one example each of a specialised animal cell and a specialised plant cell

Level 1 plus…

Describe at least one adaptation of the stated animal cell and plant cell

Level 1 and 2 plus…

Explain how each adaptation helps the cell to carry out its function

Teacher feedback for improvement

WWW:

EBI:

Y7 Particles

Y7 C1.1 Particles and their behaviour

In this question you will be assessed on using good English, organising information clearly and using specialist terms where appropriate.

Explain in detail why the properties of water are different in its three states. (6)

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Level 1 (1-2 marks) Level 2 (3-4 marks) Level 3 (5-6 marks)

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Name the three states of matter water (and all substances) can exist in

Level 1 plus…

Compare the properties of water in its three states

Level 1 and 2 plus…

Explain why the properties listed occur, in terms of particle behaviour

Teacher feedback for improvement

WWW:

EBI:

Y7 Forces

Y7 P1.1 Forces

In this question you will be assessed on using good English, organising information clearly and using specialist terms where appropriate.

An organiser of a bungee jumping competition changes the length of the bungee rope so different people can use the rope safely. Use your idea of forces to describe how the size of a person affects the rope when they jump.

Extra information: The rope is 15 m long and it extends by 3 m when an adult jumps. An adult weighs twice as much as a child. (6)

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Level 1 (1-2 marks) Level 2 (3-4 marks) Level 3 (5-6 marks)

Describe how the length of elastic rope changes when a force is applied

Level 1 plus…

State Hooke’s Law

Level 1 and 2 plus…

Explain, using the data given, how to calculate the extension of the bungee rope

Teacher feedback for improvement

WWW:

EBI:

a. Cells Q1.          (a)     The diagrams below show an animal cell and a plant cell.

(i)      The lines from the boxes show the positions of two of the parts that are present in both cells.In the boxes, write the names of these two parts.

2 marks

(ii)     Give the names of two parts which are present in plant cells but not in animal cells.

1.  ...........................................

2.  ...........................................2 marks

(b)     Organs can carry out their functions because of the special cells they have.

          Draw a straight line from the name of each type of cell to the function of the cell and then to the process it carries out.One has been done for you.

3 marksMaximum 7 marks

 

 

Q2.          The diagrams show two plant cells.

not to scale

(a)     In which part of a plant would these cells be found?

cell X …………………………1 mark

cell Y …………………………1 mark

(b)     Give the name of part B.

……………………………………1 mark

(c)     (i)      Give the letter which labels the nucleus.

……………1 mark

(ii)     What is the function of the nucleus?

…………………………………………………………………………………

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1 mark

(d)     (i)      How can you tell from the diagram that photosynthesis cannot take placein cell Y?

…………………………………………………………………………………

…………………………………………………………………………………

1 mark

(ii)     Which process takes place in both cell X and cell Y?Tick the correct box.

egestion              

fertilisation          

pollination           

respiration           1 mark

Maximum 7 marks

 

 

Q3.          The diagram shows a plant cell.

(a)     Give the name of part A.

.............................................................

          Give the function of part A.

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................................................................................................................2 marks

(b)     Give the name of part E.

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          Give the function of part E.

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................................................................................................................2 marks

(c)     Give the letters of two parts that are present in plant cells but not in animal cells.

.................. and ..................1 mark

(d)     How can you tell that the cell in the diagram is from a leaf and not from a root?

................................................................................................................

1 markmaximum 6 marks

 

 

Q4.          The diagram below shows six cells.

(a)     (i)      Give the letters of the two plant cells in the diagrams.

............... and ...............1 mark

(ii)     Which one of these plant cells contains chloroplasts?Give the letter.

...............1 mark

(iii)     Give the function of chloroplasts.

.............................................................................................................

.............................................................................................................1 mark

(b)     (i)      Give the letter of the ciliated cell.

...............1 mark

(ii)     In which part of the body are ciliated cells found?

.............................................................................................................1 mark

(iii)     What is the function of ciliated cells in this part of the body?

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.............................................................................................................1 mark

(c)     Give the letter of the cell which transfers genetic information from father to offspring.

...............1 mark

maximum 7 marks

 

 

Q5.          (a)     The diagram shows a sperm cell. Sperm cells are adapted for fertilisation.

          Sperm cells use their tails to swim towards an ovum (egg).Give one other way the sperm cell is adapted for fertilisation.

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1 mark

(b)     The diagrams below show two other cells.

                                                                                                                             not to scale

(i)      Look at the diagrams above.

         What is the difference between the location of the genetic material in thebacterium and in the cell from the lining of the intestine?

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1 mark

(ii)     What is the function of the genetic material in a cell?

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1 mark

(c)     Cells in the lining of the intestine are adapted to absorb digested food.

          How does the folded membrane of these cells enable them to absorb themaximum amount of digested food?

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1 mark

(d)     A group of cells in the lining of the intestine is a tissue.

          Why is a number of sperm cells not a tissue?

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1 markmaximum 5 marks

 

 

b. Graphs

Q1.          Zoë wants to investigate the way rock is worn away by running water.She uses a long piece of ice rather than a piece of rock.She places the ice in a sink and lets a thin stream of cold water run slowly over it.

(a)     The thin stream of water starts to change the shape of the piece of ice.What shape would form in the top of the piece of ice?

......................................................................................................................1 mark

(b)     Zoë’s experiment was not a good way of showing how rocks are worn away by water. The ice was worn down a little, but mostly it got smaller for a different reason.Why did the piece of ice get smaller?

......................................................................................................................1 mark

          Zoë measures the height of the piece of ice at different times. She plots a bar chart of her results.

(c)     Draw in the bar for the height of the ice after 3 minutes.1 mark

Maximum 3 marks

 

 

Q2.          John and Sarah investigated how pupils in their class were the same and different.First they measured the length of each pupil’s little finger.

(a)     Why should each pupil keep their little finger straight while it was being measured?

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1 mark

(b)     The bar chart shows their results.

(i)      On the dotted line under the bar chart, give the units of measurement they used.

1 mark

(ii)     Give one mistake they made in the way they grouped the finger lengths in their bar chart.

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.............................................................................................................1 mark

(c)     John and Sarah then counted the number of pupils who can andcannot roll their tongues.What method did they use to collect their data?Tick the correct box.

Observe pupil’s tongues. Look at books.

Identify factors to keep the same.

Measure pupil’s tongues.

1 mark

(d)     They recorded their results in a table.

            results for investigation 2

can roll tongue cannot roll tongue

10 4

          Draw a bar on the chart below to show how many pupils can roll their tongues.

1 mark

(e)     Look at their bar charts for investigations 1 and 2.How can you tell that they used different numbers of pupils in each investigation?

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.....................................................................................................................1 mark

maximum 6 marks

 

 

Q3.          Paula made a pendulum from a ball attached to a piece of string.

                             

She counted the number of swings the ball made in 10 seconds.She repeated the experiment with different lengths of string.

          The table below shows Paula’s results. 

length of string (cm) number of swings in 10 seconds

10 16

20 11

30 9

40 8

50 7

(a)     What happens to the number of swings when the string gets longer?

......................................................................................................................1 mark

(b)     Paula drew a graph of her results.

(i)      Write the labels on both axes of the graph below.Use the table to help you.

2 marks

(ii)     Paula made a pendulum from a piece of string that was 15 cm long.How many times would this pendulum swing in 10 seconds?Use the graph to help you.

.......................1 mark

(iii)     Paula made a pendulum from a piece of string that was 60 cm long.Estimate the number of swings the pendulum makes in 10 seconds.Use the graph.Tick the best answer.

18              12            6              4    1 mark

(c)     After some time the pendulum stops moving.What force makes the pendulum stop moving?

.........................................................1 mark

maximum 6 marks

 

c. Gravity

Q1.          (a)     The diagram shows Alan sitting on a ride at a theme park.

(i)      Which arrow shows Alan’s weight?

         Give the correct letter. ..................................1 mark

(ii)     Alan begins to move forwards. Which arrow shows the force which makes Alan move faster?

         Give the correct letter. ..................................1 mark

(b)     During the ride, Alan is upside down.

          Draw an arrow on the diagram to show the direction of Alan’s weight while he is upside down.

1 markMaximum 3 marks

 

 

Q2.          The diagram below shows the path of a meteor as it gets closer to the Earth.The meteor is shown in three positions: A, B and C.

not to scale

(a)     The path of the meteor is affected by the Earth’s gravity.The arrow shows the direction of the force due to gravity acting on the meteor at B.

(i)      On the diagram draw an arrow to show the direction of the force of gravity on the meteor at A.Use a ruler.

1 mark

(ii)     On the diagram draw an arrow to show the direction of the force of gravity on the meteor at C.Use a ruler.

1 mark

(iii)     How does the force of gravity on the meteor change as it travels from A to C?

......................................................1 mark

(b)     What happens to the speed of the meteor as it travels from A to B?

......................................................1 mark

(c)     When the meteor enters the Earth’s atmosphere, three forces act on the meteor. Gravity and upthrust are two of these forces.

Give the name of the other force.

......................................................1 mark

maximum 5 marks

 

 

Q3.          The drawings show the mass and weight of four objects on different planets.

(a)     On which of the four planets is the object with the largest mass?

.............................................................1 mark

(b)     How can you tell, from the drawings, that gravity is greater on Earth than onVenus?

.........................................................................................................................

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1 mark

(c)     Gravity is less on the Moon than on the Earth.

          Complete the sentences below to compare the weight and mass of an astronauton the Moon and on the Earth.

          The weight of an astronaut on the Moon is ................................. the weight ofan astronaut on the Earth.

1 mark

          The mass of an astronaut on the Moon is ................................. the mass of the

astronaut on the Earth.1 mark

(d)     The table below gives information about five planets. 

planet distance from the Sun (million km)

time for planet to orbitthe Sun (Earth-years)

Venus 110 0.6

Earth 150 1.0

Mars 230

Jupiter 780 12.0

Saturn 1400 30.0

(i)      Look at the information in the table.

         How does the time for a planet to orbit the Sun change with its distancefrom the Sun?

...............................................................................................................

...............................................................................................................

1 mark

(ii)     Use information in the table to estimate the time for Mars to orbit the Sun.

............. Earth-years1 mark

(e)     The diagram below shows the path of a comet around the Sun.

          On the path of the comet below, place a letter X to show the position wherethe comet is travelling the fastest.

                                                                                                                           not to scale

1 markmaximum 7 marks