8R Science Final Review- 1

A student set up the experiment shown below to determine if radish seeds take in oxygen   as they germinate. Methylene blue is a chemical that is blue when oxygen is present, but is     colorless when oxygen is not present. Containers A and B each contained 200 mL of water and 10 drops of methylene blue. Ten radish seeds were added to container A. Container B   had no radish seeds.
The purpose of container B in this experiment is to

• serve as the control container       
• serve as the experimental container
• show that seeds do not give off oxygen
• show that seeds do not give off carbon dioxide

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which statement is an inference (prediction)? 

• A thermometer shows that the air temperature is 56°F. 
•  A mineral sample of galena produced a gray-black streak when tested.
• Based on previous data, ten hurricanes may occur in the year 2013.
• A weather vane indicates the wind is coming from the west.

Tags

NGSS.MS-ESS3-2

What is the density of the object in the water?

• 1.0 g/ml         
• .5 g/ml
• 0.8 g/ml
• 0.2g/ml

In an inverse relationship, as one variable _______, the other variable  ______

• increases,  increases
• stays the same, increases
• increases,  decreases
• decreases,  decreases

The diagram below shows water in a graduated cylinder. A student states that the graduated cylinder contains 150 mL of water. This statement is

• a prediction

• a theory

• an observation

• a hypothesis

The average daily air temperature at a certain location increases when there is a seasonal increase in the number of daylight hours. Which graph best shows this change? (HINT- Both are increasing!)

• Graph A

• Graph B

• Graph C

• Graph D

The diagram below shows 20 grams of two different materials, A and B, on laboratory   balance.
Compared to material A, material B has a different

• density 
• phase
• mass 
• shape

What is the volume of the liquid shown in the graduated cylinder? _________mL                         

• 40 mL
• 41 mL
• 43 mL
• 4.3 mL

The mass of the rock indicated on the triple beam balance is ______g.

• 354.6 g
• .3546 g
• 35.46 g
• 3.546 g

The mass of the rock indicated on the triple beam balance is ______g.

• 354.6 g
• 354 g
• .3456 g
• 350 g