1. Convert 4.0 kilometers (km) to meters (m). (1 point)
0.04 m
40 m
400 m
2. For his science project, Austin wants to determine if the pH of standing rainwater changes
over time. He collects a jar of rainwater and places it indoors in a spot that does not
receive a lot of sunlight to limit evaporation. Using a pH testing kit, he measures the pH of
the water once a day for 20 days.
What is the independent, or manipulated, variable in Austin’s experiment?
(1 point)
the number of days the rainwater is allowed to sit
the number of times the rainwater is observed
the change in the amount of rainwater due to evaporation
the change in pH of the rainwater over time (my answer)
3. The growth of a certain plant was measured over a period of more than a month. How
many centimeters did the plant grow between day 10 and day 30?
(1 point)
0.5 cm
1.0 cm
1.5 cm
2 cm
4. How is a scientific theory different from a hypothesis? (1 point)
A theory is an explanation of a single phenomenon; a hypothesis is a question that can be tested. (my answer)
A theory is a well-tested explanation; a hypothesis is a possible answer that needs to be tested.
A theory and a hypothesis are both educated guesses, but a hypothesis is not proven.
A theory explains a scientific law; a hypothesis explains a theory.
5. Which of the following would introduce bias into an experiment? (1 point)
publishing your experimental results in a scientific journal
allowing other scientists to repeat and verify your experimental results
using a computer to record and store your data
6. Which of the following questions is outside the scope of science? (1 point)
How are religion and philosophy different?
What is the diet of the American alligator?
How do humans digest protein?
How does gravity affect an airplane’s motion?
7. Which of the following statements is true about scientific inquiry? (1 point)
All scientists use the same method of scientific inquiry.
Scientific inquiry includes one scientific method.
Scientific inquiry is an ongoing and repetitive process.
Scientists try to avoid using scientific inquiry.
8. Which of the following is something a scientist might do to practice science safety? (1 point)
Perform safety inspections.
Wear open-toed shoes.
Reuse unwashed glassware.
Keep a messy work station.
9. Which of the following is an observation you can make by looking at the image? (1 point)
One lion is running away from the other lion.
The lions are from the same pride.
Both lions are hunting prey.
One lion's tail is raised higher than the other lion's tail.
10. Creating a prototype and troubleshooting are steps in the development of (1 point)
a new scientific theory.
a new experiment.
a new scientific law.
a new technology.
11. Several studies linking cigarette smoke to health problems have resulted in the banning of
smoking in many public places. This is an example of
(1 point)
ways scientific theories become scientific laws.
ways scientists communicate results.
ways science influences society.
ways scientific hypotheses are tested.

D
D
C
A
D
A
B
A
D
D
A
B
True
Dependent
Patent
Evidence
Constraints
Constant
Prototype
Inference
Predicting
Control

Can someone check my answers? Thank you

1. 0
2. 21
1. 1. 4 000 000 meters * m
2.The independent variable: that would be "time."
The manipulated variable: the pH of the rainwater. At least, it's the dependent variable! :-)
(Austin might seal the jar between measurements, with plastic-wrap, to make really sure it doesn't evaporate; if it evaporates, the concentration changes just from evaporation, not simply because it's standing rainwater. He might also have a second jar to measure at the same time, with distilled water, just to compare the two, as a "control" sample. And to really do it up nice, he might put it on a porch so the temperature stays ambient, as would rainwater in a puddle.

1. 0
posted by DANA connexus kid

## Similar Questions

1. ### Math

To convert from kilometers (km) to meters (m), multiply by 1000. How many meters are there in 6.2 km?
2. ### Scientific Notation - PLEASSEE

A rectangular yard had a length of 0.006 kilometer and a width of 5x10^-3 kilometers. A. Use scientific notation to express the ares of the yard in kilometers, showing each step in the process. B. Convert the area into square
3. ### MATH

1. To convert from kilometers (km) to meters (m), multiply by 1000. How many meters are there in 6.2 km? A~6,200M? 2. Multiply.5.75 * 10 (the problem is 10 to the power of 2)A~ 575 3. Multiply.0.8175 * 1, 000 =A~817.5?
4. ### Chemistry

Can anyone help and check my answers? A. 8.43 cm to millimeters--- 84.3 millimeters. B. 2.41x10^2 cm to meterss--- 0.0241 meters. C. 294.5 nm to centimeters--- I don't know how to concert this. D. 1.445x10^4 m to kilometers---
5. ### Algebra 1

A car is traveling at a rate of 80 kilometers per hour. Set up the equation that would convert the speed to meters per second. Then evaluate
6. ### MATH

To convert from kilometers (km) to meters (m), multiply by 1000. How many meters are there in 6.2 km? A~6,200M? 2. Multiply.5.75 * 10 (the problem is 10 to the power of 2)A~ 575 3. Multiply.0.8175 * 1, 000 =A~817.5? 4. Paula's car
7. ### Math

300 kilometers, 180 kilometers and 200 kilometers represents the trips that ms axler took in her job this week. How many kilometers had ms axler traveled when she was at the one third point in each trip? Explain your reasoning
8. ### PHYSICSS!!!

still cant get this one? so damon i know you wanna help! or anyone else im open for suggestions haha Consider a spaceship located on the Earth-Moon center line (i.e. a line that intersects the centers of both bodies) such that, at
9. ### physics

Its 80 kilometers from point A to point B. Someone travels at an average speed of 40 kilometers per day and takes a negligible amount of time at point B to turn around to head back to point A. At what average speed must the person
10. ### Programming

How would the flow charts and pseudocode look for this? The Metric Conversion application is a menu-driven program. First, the program displays a Main Menu that states the purpose of the program and allows the user to select one
11. ### Algebra

1. To convert meters per minute to kilometers per hour, which of the conversion factors would be used? Select all that apply. [ ] 1km/1,000m [ ] 1,000/1 km [ ] 1 min/60 sec [ ] 60/1 min [ ] 60/1 h I need some help

More Similar Questions