200 – Which of Newton’s laws explains why seatbelts are important during car crashes?
**Answer: What is Newton’s First Law (inertia)?_
200 – Which type of wave does not need a medium to travel?
**Answer: What is an electromagnetic wave?_
200 – In a parallel circuit, if one bulb goes out, what happens to the others?
**Answer: What is they stay lit?_
200 – What two factors affect gravitational force between objects?
**Answer: What are mass and distance?_
200 – What is the shape of a DNA molecule?
**Answer: What is a double helix?_
400 – Why does a baseball speed up more than a bowling ball when hit with the same force?
**Answer: What is because the baseball has less mass (F = ma)?_
400 – What happens to wavelength when frequency increases (if speed is constant)?
**Answer: What is it decreases?_
400 – What device measures voltage across a component?
**Answer: What is a voltmeter?_
400 – What shape are most planetary orbits?
**Answer: What is elliptical?_
400 – If both parents are heterozygous (Tt), what is the probability of an offspring being tall?
**Answer: What is 75%?_
600 – Action: You push a wall. Reaction: The wall…?
**Answer: What is pushes you back with equal force (Third Law)?_
600 – Why can sound not travel through space?
**Answer: What is because there is no medium (like air)?_
600 – Increasing the resistance in a circuit causes the current to…?
**Answer: What is decrease?_
600 – Why do planets stay in orbit around the Sun?
**Answer: What is the balance of gravity and inertia?_
600 – What do chromosomes carry?
**Answer: What is genetic information (DNA/genes)?_
800 – A box won’t move until you apply force. What two forces are acting before you push?
**Answer: What are gravity and normal force?_
800 – Which wave property affects volume (loudness)?
**Answer: What is amplitude?_
800 – What two things affect the strength of an electric field?
**Answer: What are charge amount and distance?_
800 – What causes tides on Earth?
**Answer: What is the gravitational pull of the Moon (and Sun)?_
800 – A genotype is Aa. What kind of trait will be expressed?
**Answer: What is the dominant trait (A)?_
1000 – What unbalanced force causes a ball rolling across the floor to stop eventually?
**Answer: What is friction?_
1000 – What type of wave behavior explains echoes?
**Answer: What is reflection?_
1000 – What happens to a magnet's field when you cut it in half?
**Answer: What is each piece becomes its own magnet with north and south poles?_
1000 – How does gravity differ on the Moon compared to Earth?
**Answer: What is it is weaker because the Moon has less mass?_
1000 – What term describes the physical trait that shows up (like blue eyes)?
**Answer: What is phenotype?_