• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5
• Level: GCSE
• Subject: Maths
• Word count: 1379

# Investigate the strength of a snail's mucus on different surfaces

Extracts from this document...

Introduction

GROUP 4

SNAILS

Physics: To investigate the power of a snails mucus on different surfaces

Chemistry: to determine what percentage of a snails shell composed of CaCO3

Biology: To investigate taxism in snails

13 September 2004

Rafael Bravo

Ana Gosnar

John Kjeldgaard

Marianne Sangster

PHYSICS

To investigate the strength of a snail’s mucus on different surfaces

Planning A

Our research question:  At which angle does the snail’s mucus fail to hold the snail and how different surfaces (solids and liquids) affect it?

Hypothesis:

We predict that the snail’s mucus is rather strong; therefore it can hold a snail at quiet steep angles. Since a snail is rather small (approx. 20 g), we predict that the mucus is subsequently strong enough to hold the snail until the angle is rather large (150°). We also predict that different surfaces will affect the mucus’s strength. If the surface is smooth the snail will not grip on to it as strong as if the surface would be rough. Also

Middle

2

6.7

Yes

Yes

Yes

Yes

Yes

Yes

3

11.10

Yes

Yes

Yes

Yes

Yes

Yes

4

12.3

Yes

Yes

Yes

Yes

Yes

Yes

5

15.97

Yes

Yes

Yes

Yes

Yes

Yes

 Snail Mass(g)Δm   0.1g Does the snail stick to foam surface at 30°ΔΘ   5° 45°ΔΘ   5° 60°ΔΘ   5° 90°ΔΘ   5° 105°ΔΘ   5° 150°ΔΘ   5° 1 3.3 Yes Yes Yes Yes Yes Yes 2 6.7 Yes Yes Yes Yes Yes Yes 3 11.10 Yes Yes Yes Yes Yes Yes 4 12.3 Yes Yes Yes Yes Yes Yes 5 15.97 Yes Yes Yes Yes Yes Yes
 Snail Mass(g)Δm   0.1g Does

Conclusion

If I were to repeat this experiment I would actually avoid using any animals, I would advise the group to choose a non-living item. But if the rest still wanted our Group 4 to focus on snails I would pick an experiment where I would be measuring for example the average speed of a snail or how strong the snail is using weights.

5/4/2007

Rafael Bravo and Ana Gosnar

This student written piece of work is one of many that can be found in our GCSE Phi Function section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related GCSE Phi Function essays

1. ## The totient function.

42 Once again there only seems to be a factor relationship with prim numbers only. For this reason I will continue my investigation using prime numbers to see if my theory figures out I wasn't sure but I came up using the previous formula and it worked.

2. ## Investigating the Phi function

(28)=12 (7)=6 (4)=2 12= 6x2 shared factors (4) 2 1,3 (4) = 2 (7) 1,2,3,4,5,6 (7) = 6 They have no shared factors so they are co-prime and the equation works (3x5) = (3)x (5) (15)=8 (3)=2 (5)=4 8 =4x2 shared factors (3) 1,2 (3) = 2 (5)

1. ## In this coursework I was asked to investigate the Phi Function (f) of a ...

= 4, ?(7) = 6 But for even numbers, the ? values of an even number which is also a multiple of 3 or a multiple of 5 the value is less than that of the previous value, therefore we can say that: ?(e, where e is an even integer and not a multiple of 5 or 3)

2. ## Identify and explain the rules and equations associated with the Phi function.

?36= ?(22) x ?(32) ?55= (51-50) x (111-110) ?36= (22-21) x (32-31) ?55= 4 x 10 ?36= 2 x 6 ?55=40 ?36= 12 ?15= ?(51) x ?(31) ?19= ?(191) ?15= (51-50) x (31-30) ?19= (191-190) ?15= 4 x 2 ?19= 18 ?15=8 ?12= ?(31) x ?(22) ?26= ?(21) x ?(131) ?12= (31-30) x (22-21) ?26= (21-20) x (131-130)

1. ## The Phi Function Investigation

1,5,25 26 1,2,4,6,13,26 27 1,3,9,27 27 = 1,2,4,5,7,8,10,11,12,13,14,15,16,17,19,20,22,23,24,25,26,27 The number 27 has 22 positive integers, they are shown above. The number 27 has 22 positive integers as shown on the previous page. The number 3 has 2 positive integers and the number 9 has 6 positive integers.

2. ## The Phi Function

1,2,7,14 No 15 1,3,5,15 No 16 1,2,4,8,16 No 17 1,17 Yes 18 1,2,3,6,9,18 No 19 1,19 Yes 20 1,2,4,5,10,20 No 21 1,3,7,21 No 22 1,2,11,22 No 23 1,23 Yes From looking at the above table I can tell you that the phi function of 8 is 4.

1. ## The phi function.

(27) = 18 I noticed that the Phi of 3, 5, and 11, which are all prime numbers is themselves minus one. So when n is a prime number ? (n) = n - 1 PART 2. A) Check that: 1- ?

2. ## The Phi function.

So we can see that the difference has to multiplied by 2. This means that the value of the latter odd number that is not a prime number will be more than that of the preceding odd number that is not prime.

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to