Q: What effect, related to weather forecasting, occurs not only for sound but for any wave when there is relative motion between the observer and the source? A:
OPTIONS:
- pulse
- echo
- precipitation
- doppler

Answer: doppler

Question: Q: What reproductive method has two parents involved? A:
OPTIONS:
- mitosis
- pollination
- budding
- sexually
Answer: sexually

input with options: Q: When represented by a single letter dominant alleles are represented by what case letter? A:
OPTIONS:
- mixed letters
- numeral
- lowercase
- uppercase
output: uppercase

Q: Q: A pulley changes the direction of the force t exerted by the cord without changing its what? A:

OPTIONS:
- longitude
- latitude
- position
- magnitude

A: magnitude

input: OPTIONS:
- trial run
- defined experiment
- blind test
- controlled experiment Now, answer this question: Q: What type of experiment involves two identical experiments carried out side-by-side, with and without an independent variable? A:
A:
output: controlled experiment

Question: Q: What is the term for the steep sloped side of a sand dune? A:
OPTIONS:
- front face
- break face
- slide face
- slip face
Answer:
slip face