Lesson 2

What is the International Prototype Kilogram (IPK) made of?

• Gold and Silver

• Platinum and Iridium

• Iron and Nickel

• Copper and Zinc

Why did the Mars Climate Orbiter crash into Mars?

• Instructions were inputted in the wrong units

• It ran out of fuel

• It was hit by an asteroid

• It lost communication with Earth

What is the speed of a car going 60 miles per hour in lightyears per second?

• 1.2 * 10^-10

• 9.3 * 10^-12

• 5.6 * 10^-8

• 7.8 * 10^-6

What type of number is the number of eggs in a dozen?

• Approximate

• Exact

• Estimated

• Measured

How many significant figures are in the number 2.4590 * 10^-4?

• 3

• 4

• 5

• 6