LSCPHYS1: MEASUREMENTS IN PHYSICS Assignment

Activity: Conversion of units of length

 Key question

Can you change from one unit of length to the other?

What to do

1. In groups or individually determine how many: (i) centimetres are in 1 metre; (ii) milimetre are in 1 metre; (iii) kilometres are in 1
2. In groups or individually, convert the following measurements into the units indicated in brackets:

(i) 4.25 m (cm) (ii) 0.256 km (m) (iii) 367.5 dm (Dm)

Look at your friend and try to suggest his/her height. When you do this, you are estimating the height of your friend.

In this section, you will estimate how long something is and then you will measure it to see how good you are at estimating. Remember you should always record your work. Write down all the estimates and measurements you make in this section in a table. You will be using some of these results later.

Activity: Finding the height of your friend Key question

How tall are you and your friend?

What you need

• Ruler

What to do

Work with your friend and:

1. estimate your height and your friend’s.
2. think of a way of measuring your friend’s height accurately (to the nearest centimetre) and then measure Do the same to yourself.
3. record the

You are not only estimating and measuring, you are also planning when you think of an appropriate way of doing the work. How did you do it? Perhaps you made a mark on the wall or the doorpost at the exact height of your friend. Did you ask your friend to take off his or her shoes first? Give reasons for your answer.