Review Numbers in Science

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5
• 3.98  x  10^-5
• 3.98  x  10^-4
• 39.8  x  10^-6

How many sig figs are there?
100.00

• 1
• 3
• 4
• 5

How many sig figs are there?
4004

• 1
• 2
• 3
• 4

How many sig figs are there?
0.000008

• 1
• 2
• 6
• 7

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

Round 0.010229 to four sig figs

• 1022
• 1023
• 0.01023
• 0.01022

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Why do some substances float on water?

• they are warmer than water
• they are cooler than water
• they are more dense than water
• they are less dense than water