7th
8th
9th
10th
11th
100

Which branch of biology studies the relationships between organisms in their environments?

Ecology

100

What are smaller earthquakes that follow a large earthquake for days or months?

Aftershocks

100

What is the formula that calculates the density of an object?

p=m/v

100

Which type of flower lacks either sepals, pistils, petals, or stamens?

Incomplete Flower

100

Which isotopic is the atomic mass unit defined relative to?

Carbon-12

200

Which plant family helps restore nitrogen to the soil?

Pea family

200

Which type of volcano is broad and gently sloping with mild eruptions?

Shield

200

What is the closeness of a measurement to the quantity's real value? 

Accuracy

200

What part of the flower produces pollen

Anther OR stamen

200

What is the name of the compound HF? 

hydrogen flouride 

300

Through which process does water in the soil enter a root's root hairs?

Osmosis

300

What is the point on the earth's surface directly above where an earthquake begins?

Epicenter

300

Which system of measurement was designed by the French to be simpler to use than the FPS system?

Metric

300

What do we call the one-way diffusion of water through a semipermeable membrane?

osmosis

300

What is the dense central portion of an atom called?

Nucleus

400

Which term means the uniting of a sperm cell and an egg cell?

Fertilization

400

What method of earthquake damage involves placing buildings on movable stilts that absorb earthquake energy?

Base Isolated

400

Which formula measures how quickly an object moves?

v=d/t

400

Which type of tissue is responsible for water and dissolved minerals being transported from the roots to the stem? 

Xylem

400

What is the number of protons in an atom?

Atomic number

500

Where does the root system of a plant develop?

Radicle

500

What is the plastic rock in the lower portion of the upper mantle on which plates float?

Asthenosphere

500

What is the ratio of input distance to output distance?

IMA

500

Which type of plants are yeasts and mildews?

Sac fungi

500

Name the negatively charged subatomic particles in an atom.

Electron