Unit 2 Test Review (Scientific Data Handling)

You are playing darts and throw three darts at the target. The darts land very close to each other but far from the center of the target. Are the darts accurate, precise, both, or neither?

• Accurate

• Precise

• Both

• Neither

Convert 250 milliliters to liters.

• 0.25 L

• 2.5 L

• 0.025 L

• 25 L

12.45 + 3.2 = ? Round using the significant digit rules.

• 15.7

• 15.6

• 15.8

• 16.0

Convert 12 inches to centimeters. (1 inch=2.54 cm)

• 30.48 cm

• 25.4 cm

• 32 cm

• 28 cm

There are (a)   meters in 5.2 kilometers.

• 5200 m
• 5000 m
• 5300 m
• 5100 m

9081000000 in scientific notation is (a)  

• 9.081 × 10^9
• 9.081 × 10^8
• 90.81 × 10^8
• 0.9081 × 10^10

Match the following thermometer readings with their descriptions.

• A thermometer consistently reads the correct temperature accurately and precisely.

• Accurate

• A thermometer consistently reads the same incorrect temperature.

• Both

• A thermometer reads different incorrect temperatures each time.

• Precise

• A thermometer consistently reads the actual temperature.

• Neither

A student investigates how different fertilizers affect the growth of bean plants. They use three types of fertilizer: A, B, and C. All plants receive the same amount of water and are kept in the same sunlight conditions. Identify the controlled variable in this experiment.

• Amount of water

• Type of fertilizer

• Growth of bean plants

• Sunlight conditions

Convert 3.5 liters to milliliters.

• 3500 mL

• 3000 mL

• 4000 mL

• 350 mL

How many significant digits are in the number 0.00456?

• 3

• 2

• 4

• 5