Earth & Space
What causes day and night on Earth?
Earth's rotation on its axis causes day and night.
What is the smallest unit of matter?
Atom
What is inertia?
The tendency of an object to resist a change in motion.
What is the basic unit of life?
The cell.
Answers may vary: Wear goggles, no eating, listen to instructions, etc.
Name the phases of the moon in order.
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, Waning Crescent.
Name the four states of matter and give an example of each.
Solid (ice), Liquid (water), Gas (steam), Plasma (Stars)
Define Newton's First Law of Motion.
An object in motion stays in motion, and an object at rest stays at rest unless acted on by a force.
What organelle is known as the "powerhouse" of the cell and
Daily Double BONUS, why?
The mitochondrion,
Bonus, because it produces energy (ATP) through cellular respiration.
Convert 500 mililiters to liters
0.5 liters
Explain why we have seasons on Earth.
Earth's tilt and its orbit around the sun cause different parts of the Earth to get more direct sunlight during the year.
What's the difference between a physical and a chemical change?
Physical: changes form (like melting); Chemical: new substance forms (like rust).
50 km/h
How do plant cells differ from animal cells?
Plant cells have a cell wall, chloroplasts, and a large central vacuole, which animal cells do not.
What does the term "ecosystem" mean?
A community of living organisms interacting with their environment.
What is the difference between a solar and lunar eclipse?
A solar eclipse happens when the Moon blocks the Sun. A lunar eclipse happens when Earth blocks sunlight from reaching the Moon.
Draw and label the three parts of an atom.
Proton (+), Neutron (0), Electron (–) with correct labeling of nucleus and shells.
How does friction affect motion?
Friction slows down or stops the motion of objects.
Explain the role of DNA in the cell.
DNA contains the genetic instructions used for growth, development, functioning, and reproduction of all living organisms.
Brown eyes (B) are dominant over blue eyes (b). If both parents have the genotype Bb, what eye colors could their children have?
Punnett Square:
Genotypes: BB, Bb, bb
Phenotypes:
BB and Bb = Brown eyes
bb = Blue eyes
Probability:
75% Brown eyes
25% Blue eyes
Describe the role of gravity in keeping planets in orbit.
Gravity keeps planets in orbit around the sun by pulling them toward it while their inertia keeps them moving forward.
Balance the equation: H₂ + O₂ → H₂O
Balanced: 2H₂ + O₂ → 2H₂O
Describe how mass and force affect acceleration.
More mass = more force needed; more force = more acceleration.
Describe the process of photosynthesis and identify the organelle where it occurs.
Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to make glucose and oxygen. It occurs in the chloroplasts.
20mm or 0.8in.