2. Describe what is meant by the term magnification

Magnification is the number of times larger or smaller an image appears, compared to the original object size.

3. If a magnification of 0.8 is calculated, would the image be smaller or larger than the original object?

Image would be smaller than the object. 

4. Sarah measured her image height as 0.15m and her object height as 7.5cm. Calculate her magnification

Both quantities need to be in the same units. So, 0.15m = 15cm

Magnification = Image height/Object height

Magnification = 15/7.5 = 2

5. On the grid below each box is 1cm x 1cm.