Ejercicios 2ESO cont

1. Which tool would you use to measure (indicate resolution): A 100 m race duration, the weigth of an apple, the weigth of a car, the length of a room's side, a screw's length,  the volume of a tennis ball, 

1. A ferry  weigths 45876 ton, measures 182123 cm, and has a useful surface of 22,765 hm2. Express its characteristics in IS units, using scientific notation and 3 significant digits
2. Summarize and identify the steps which the teacher took during a lesson to study the free fall of objects. Include the name of the step and what the teacher did

1. Convert to IS: 

• 212,34 cm

• 48.7 cm3
• 4567 ha (hm2)
• 67,42 g
• 1,245 ton

Repaso 2 ESO

Exercises 2 ESO

Answer to the questiosns in a piece of paper

• In which stage of the scientific method do we a)repeat a natural phenomena b)state an initial idea c)study the results frm the experiment d)wonder ourselves about nature

• Which statements about science are true? a) we can rely on science 100% b)science doesn´t need creativity c)science requires curiosity d)scientific method never fails

• Change these magnitudes to IS units

45 cm

67 ton

21,7 mm

32 L (dm3)

72 km/h

3254,7 dm

0,912 km

23 cm 2

 Write the scientific notation with the number of digits

456876544 kg (5)

0,0000845 m (6)

2134,6578 l (3)

0,00000000008727 km (3)

8769453716 km/h (6)