1. Write what you understand about the following: Scientific Methods, hypothesis, scientific theory, scientific law.
2. Give an example of a scientific theory and a scientific law.
Questions 3, 4, 5 and 6 on page 9.
1. Why do we use SI units in science?
2. To drive from Siji to Abu Dhabi takes 3 hours 20 minutes. If the distance between these places is 270km, what is the average speed of the journey? Give the correct units.
3. Mr Will walks at a speed of 1.25m/s, what is his speed in kilometers per hour?
4. What is 311.53g to a) 2 significant figures, b) 3 significant figures?
5. What is 9.8372s to a) 1 significant figure, b) 3 significant figures?
6. Would your answer to 4a) be suitable for recording the 100m sprint times at the Olympic games? Give a reason for your answer.
Questions 11 to 13 on page 13. Give the correct units.
1. Write what you understand about precision and accuracy. What is the difference between the two?
Questions 16 and 20 on page 17. (1.5mi = 1.5 miles)
Question 50 on page 27
1. What type of relationship would graphs of the following have (linear, quadratic or inverse)?
Example: distance walked and time. Answer: linear
a) Speed of a ball dropped from the top of Burj Khalifa and time. Which variable is dependent and why?
b) Physics test score and maths test score.
c) Time and radiocative decay. Which is the independent variable and why?
d) Time spent doing homework and exam score.
e) Temperature of boiled water (cooling down) when left outside and time.
f) Speed of airplane leaving Dubai Airport and time.
Questions 53, 55 and 56 on page 27
Questions 58 and 61 on page 28
Question 8 on page 31
1. If we are talking about motion of an object on a straight line, what information do we need to know?
2. In a particle model, the size of the object must be much bigger than the distance it moves. Is this True of False?
Finish questions 2, 3 and 5 on page 36.
3. Draw a particle model motion diagram for an athlete running the 100m sprint race at the Olympic Games.
Vectors and Scalars (ignore after 02:00)
1. Which of the following are vectors and which are scalars?
a) 5 metres
b) 12 kilometers South
c) 7 miles on a bearing of 60 degrees
d) 3.5 litres
e) 5 cm/s
Miss Lauren drives 6km East to the restaurant, she then drives another 5km East to get home. What is the resultant vector?
Mr Will walks 250 metres North, then 350 metres in the opposite direction. What is the resultant vector?
An airplane flies 400 miles South, then turns and flies 400 miles West. What is the resultant vector? Give your answer to the nearest mile.
Position - Time Graphs and Velocity/Speed (ignore after 04:30)
Finish questions 11-15 on page 42
Questions 16-20 and 22-25 on page 42
1. How can you calculate velocity from a position-time graph?
2. How can you calculate the average velocity from a position-time graph?
3. What do you understand by the term: instantaneous velocity?
4. Based on the 100-m world records. What were the average speeds for the men's race and the women's race? What is the difference between these two speeds?
Finish questions 27 and 29-31 on page 48
Questions 33-36, 38-40 and 43 on page 51
Please do questions 77-79 on page 56 and standardized test questions on page 57.