7th Practice Questions CAST Middle School Ver. A

First & Last Name

1. Which statement is supported by the evidence? Select ALL that are supported by evidence

• Flamingos that eat brine shrimp and algae have a darker coloring
• Consuming carotenoids gives flamingos their dark pink color
• Flamingo coloring is influenced by the environment
• Flamingos in the United States are pale in plumage
• Wild flamingos are always darker than captive flamingos

2. The zookeepers in Ohio want their flamingos to have a brighter coloring. Which would be a good plan?

• The zookeepers should move the flamingos to Florida
• The zookeepers should bring in some darker flamingos to breed with the pale flamingos in hopes of passing their genes to the next generation
• The zookeepers should add brine shrimp and algae to the food of the Ohio zoo flamingos
• An antibiotic should be added to the flamingos’ water so that they can recover from illness
• All of these

3. Whitney is investigating factors that affect the growth rate of potted tulip plants. Which of the following experimental variables would be relevant to her investigation? (check all that apply)

• The amount of light the tulip plants receive
• The amount of water the tulip plants receive
• The color of the pot the tulip plants are planted in
• The type of soil the tulip is planted in

4. What does the diagram demonstrate?

• The parts of a plant and how they function
• Plants and animals need water to live
• Plants take in carbon dioxide and release oxygen
• Plants consume soil for food
• All of the above

5. Two plants are compared for growth. One got 3 hours of sunlight a day and the other got 8 hours of sunlight a day. Both test groups had the same size container, the same type of soil, and received the same amount of water each day. Which is an evidence statement based on the text and graph?

• Plants need sunlight, water, soil, and space to grow
• The type of soil can affect plant growth
• Plants receiving 8 hours of sunlight had more growth than plants receiving 3 hours of sunlight
• The amount of sunlight a plant received had no affect on the growth

6. In this experiment the amount of sunlight was the __________________ variable. The plant growth was the ___________________ variable. It was measured in ______________. The type of soil and amount of water the plants received were both ______________ variables. The plants that received more sunlight had _______________ growth in height at the end of the 9 _________ time period.

• independent, dependent, centimeters, control, increase,d day
• dependent, independent, centimeters, control, decreased, day
• independent, dependent, centimeters, control, decrease,d day
• dependent, independent, centimeters, control, increased, day

31. The earthquake pictured in the diagram is in Utah. What are some possible effects of this earthquake? (select all that are possible)

• Landslide
• Tsunami
• Fire
• Heavy rainfall
• Avalanche

7. Select the criteria the retaining wall must meet to protect drivers on the road below the hill.

• Cost a lot of money
• Hold water-saturated soil in place
• Allow animals to use the hillside for foraging and burrows
• Be attractive visually

8. Choose two problems that could be caused by installing a retaining wall on the hillside.

• Delay and block traffic during installation
• The wind could damage the wall.
• The wall will get wet when it rains
• Prevent native plants from growing on the part of the hillside that has the wall