Raeleen Bats that see with their ears : Reading Follow Up.

1. What kind of sound does a bat use for echolocation? Bats use echolocation for finding food, avoiding obstacles that comes in their way when they are flying in the dark and it even lets them communicate with other bats and echolocation is like echoes in a large, empty room or at the edge of the canyon.
2. What kind of echo does a bat hear from an object moving away from it? They hear diffrent sounds that one that is still and is either softer or louder. The sound is louder if the object is coming closer and if the sound is softer the object is going away.
3. What would you miss if you suddenly switched from seeing with your eyes to echolocation? Why? I would miss everything but echolocation is slightly because you can see properly in the dark and if someone is tippy toeing away from me I would know but it is also confusing.
4. What is the main idea of this reading passage? Write a brief summary in 2 - 3 sentences.

The story is about bats and how they communicate with other bats using echolocation and how they know when a moving object is near by. The main passage of the story is how bats hear other stuff coming from far away and it is also about Ultrasound and Echolocation.

5. What might cause echolocation to work differently for whales than it does for bats?

That whales are not active at night, and they don't see with ears to see they use their sense to find food.

6. What does it mean when is says Bats are among a ‘select group of animals’

That bats are also blind like those animals because they all use the senses to find food and stuff.

7. What is ‘ultrasound’?

A special noise, to do what other animals do with their eyes.

Raeleen Maths Presentation Week 2.

Raeleen Alphabet addition #2

Raeleen Thinkboard

Talking through cups

Name:

Raeleen, Htawara, Taeshell, Cheyanne, Shanika

Title of experiment: Talking through cups

Question:

(What do we want to find out?)

We want to find out how it works by talking through 2 cups and what string is going to make us hear each other.

Hypothesis:  (what do you think will happen?)

I think it the thinnest string is going to work because by looking at the other strings I think we may not be able to listen to each other.

Procedure:

How will we find out?

(Step by step)

1. First of all we need to make a hole with a pin in both cups so that the thin string can fit through

2. We need to thread the string through the hole and attach it to a ice block stick inside the cup.

3. We need to tie the string around the ice block stick so that it won't be able to come out

4. When we are finished with that string we detach that string from the ice block stick and move on to the rope string

5. For it to fit through we need to make the hole a little bit bigger.

6. Next we thread that string through the hole and tie it to the ice block stick.

7. After we've finished with it we can move onto the thickest string. So we need to take the string off the ice block sticks.

8. We'll probably need to make the hole bigger using a pin once again so that the string can fit through

9. Thread it through the hole and tie it to the ice block sticks.

10. That's how we're going to find out.

Results:

What actually happened?

1. We were able to hear through the thin string. It was allright but it could’ve been better. The noise level could of been louder.

2. When using the rope string it was much better then our first string, we could hear each other very clearly maybe because it was thicker. I also think that the further away the person your communicating with is. It's

3. Our last string was probably the loudest out of all of them. I think that this string was the loudest because it was the thickest out of all of them.

Conclusions:

What did we learn? We learnt that using cups as telephones actually do work. We also learnt that the thickest string is probably the string thats going to work. Probably the closest you and the person your communicating with, you'll be able to hear them much more clearer and louder.

Raeleen Triangle decimals

Raeleen Alphabet addition

Each number in the alphabet equals a number, here is your key.

You need to add the numbers in the words together to find your answer.

A = 1

B = 2

C = 3

D = 4

E = 5

F = 6

G = 7

H = 8

I = 9

J = 10

K = 11

L = 12

M = 13

N = 14

O = 15

P = 16

Q = 17

R = 18

S = 19

T = 20

U = 21

V = 22

W = 23

X = 24

Y = 25

Z = 26

Vibration - 22 + 9 + 2 + 18 + 1 + 20 + I +  15 + 14 = 102

Maths - 13 + 1 + 20 + 8 + 19 = 61

Sound - 19 + 15 + 21 + 14 + 4 = 73

Molecule - 13 + 15 + 12 + 5 + 3 + 21 + 12 + 5 = 86

Experiment - 5 + 24 + 16 + 5 + 18 + 9 + 13 + 5 + 14 + 20 = 129

Pitch - 16 + 9 + 20 + 3 + 8 = 56

Transferred - 20 + 18 + 1 + 14 + 19 + 6 + 5 + 18 + 18 + 5 + 4 = 128

Movement - 13 + 15 + 22 + 5 + 13 + 5 + 14 + 20 = 107