Photosynthesis
Properties of Matter
chemical and physical changes
Earth, Sun & Moon
Food Webs
100
ach plant in the table above received the same amount of water and soil.
Which statement BEST explains the growth pattern for Plant 2?
The plant did not receive enough oxygen.
The plant received too much carbon dioxide.
The plant did not receive enough direct sunlight.
The plant received too much nitrogen.
The plant did not receive enough direct sunlight.
100
Characteristics that can be observed or measured; for example, color, melting point, and conductivity
physical properties
100
After lighting a candle, the wick burned and the wax melted. Later, the candle wick was trimmed to decrease smoke and flame height. The candle changed shapes after several hours.
Which of the following indicates a chemical change?
The candle wick was trimmed.
The candle wick burned.
The candle wax melted.
The candle changed shapes.
The candle wick burned.
100
An imaginary line that Earth rotates around
axis
100
An organism that gets energy from eating plants or animals
Consumer
200
What is the missing component represented by the question mark?
water
200
A change to a substance without forming a new substance, such as changing size or state of matter
physical change
200
Read the sentences below.
Emily and her friends are members of the science club at school. They made bird feeders to put in the outdoor classroom as part of an environmental improvement project. They are preparing bird food to place in the feeders. The recipe calls for 1 cup of peanuts, 4 cups of plain birdseed, and 2 cups of sunflower seeds to be placed in a bucket.
Which of the following is the BEST description of the bird food prepared by the science club?
It is a mixture because the properties in the bird food have not changed.
It is an element because they have created something different from the original ingredients.
It is a solution; therefore, the items cannot be separated and returned to their original state.
It is a compound because a chemical change took place.
It is a mixture because the properties in the bird food have not changed.
200
An obscuring of the light from a celestial body by the passage of an object between the celestial body and the observer or between the celestial body and its source of illumination
Eclipse
200
An organism that uses sunlight to make its own food for energy
producer
300
Which of the following best summarizes photosynthesis?
A chemical reaction involving nitrogen and other atmospheric gases.
An adaptation of plants that allows them to add nutrients to the soil.
A process by which plants produce sugar using the energy of sunlight.
An exchange of gases between animals and the air or water of their habitat.
A process by which plants produce sugar using the energy of sunlight.
300
What is the smallest unit of matter that retains all of the chemical properties of an element?
atom
electron
neutron
proton
atom
300
Choose a word from the list below and enter each blank to complete the passage.
- physical
- electromagnetic
- chemical
- frictional
Erica and her father are on a camping trip. She is in charge of chopping the firewood, while her father burns the wood in the campfire. She realizes her chopping is causing a
physical
300
Which of the following characteristics of the Sun explains why it appears brighter at night than other stars?
The Sun's surface temperature is 5,778o Kelvin (K).
The Sun's distance to Earth is 93 million miles.
The Sun's mass is 1.989 x 1030 kg.
The Sun's age is 4.6 billion years.
The Sun's distance to Earth is 93 million miles.
300
Read the following sentence and answer the question that follows.
A deer's natural habitat is a temperate forest. The deer has adapted to survive in a forest and many characteristics of a temperate forest are beneficial to a deer's survival. Deer have suitable camouflage, abundant food supply, and large territories in a temperate forest.
If a deer were to be placed in a desert ecosystem instead, which adaptation would be LEAST beneficial?
A deer's flat teeth are ideal for eating the vegetation.
A male deer's antlers can help protect it from any new predators.
A deer's nocturnal behavior keeps it active during the cool nights.
A deer's strong legs allow it to travel longer and further to find food and water.
A deer's flat teeth are ideal for eating the vegetation.
400
Light + Carbon Dioxide (CO2) + Water (H2O) → Oxygen (O2) + Glucose (Sugar)
Where is the energy stored at the end of photosynthesis?
Glucose (Sugar)
Carbon Dioxide (CO2)
Oxygen
The Sun
Glucose (Sugar)
400
The chemical formula for glucose, a sugar, is C6H12O6. The compound of glucose contains ___ atoms
24
400
Choose a word from the list below and enter each blank to complete the passage.
- physical
- electromagnetic
- chemical
- frictional
Erica and her father are on a camping trip. She is in charge of chopping the firewood, while her father burns the wood in the campfire. When her father burns the wood as fuel, a _______ change is occurring
chemical
400
The fourth planet from the Sun?
Mars
400
Which organism is at the beginning of the food chain (source of energy)?
decomposers
consumers
producers
predators
producers
500
Which form of energy is required for photosynthesis?
chemical energy
electrical energy
mechanical energy
solar energy
solar energy
500
Atoms are very small. Most of an atom's volume is _________________.
from the electrons
empty space
based on its protons
both electrons and neutrons
empty space
500
A change that alters the identity of a substance, which results in a new substance or substances with different properties
chemical
500
Which planet has two moons, a rocky surface, is the 4th planet, and named after the Roman god of war?
VenusMarsJupiterMercuryClose
Mars
500
In any food web, how do nutrients return to the ecosystem?
through the producers
through the consumers
through the predators
through the decomposers
through the decomposers