multiple subjects-science questions

Multiple Choice science questions compiled from ALL the study guide groups

What does X represent

Condensation

When rain drops with gravity, which direction will it fall?

Rain falls at an angle depending on the wind’s direction.

Why does the ocean not freeze as fast as a lake?

Ocean water has salt that prevents water molecules from sticking and creating ice crystals.

What would happen if a plant watered with ocean water/ salt water?

Plants watered with salt watered will wilt, if too much water is lost during osmosi the plant will die.

What are the folds of the long digestive system for?

To increase surface area over which nutrients can be absorbed

When its winter soltices in the North Hemisphere, which city/location would have the longest day ?

Ross Ice Shelf, Antartica

The artic circle experiences longest sunlight

Which is true about mutations?

They introduce variation in population. Sometimes mutations are helpful and are necessary for survival. Sometimes they can also be harmful.

What is the Polaris view?

North Star, the Earth is pointed directly at it, stars circle around it, it does not move.

Compared to the waters of the continental shelf, the surface waters of open oceans are generally much less productive because they….?

Lack of nutrients derived from land or ocean sediment on the seabed

Northern hemisphere and winter, position of nothern hemisphere during the winter solstice?

Earth North pole is most tilted away from the sun during winter solstice.

Southern pole tilted closest to sun because that is their summer season

What is produced during photosynthesis? What does the equation 6CO₂ + 6H₂O ——> C₆H₁₂O₆+6O₂ mean?

Plant uses carbon dioxide and water to produce glucose and oxygen

What is the best example of physical weathering?

Frost in granite or rock

Weathering is breaking down of rocks, soil, minerals, wood and artificial materials through contact with Earth’s atmosphere, water, wind, biological organism, movement of rocks etc. Other answers were chemical weathering

Natural selection has to do with variations, overpopulation, competition, and reproduction. Adaptations and variation to the environment a crucial for survival. What does natural selection do?

A process that causes populations to change over time.

What function of a cell? What is produced in the Nucleus of a cell?

in the nucleus of a cell RNA Molecules are synthesized from DNA template

If a student makes a model of an atom, what would be the most accurate model?

Having the protons and neutrons in the nucleaus

During the Loma Prieta earthquake 1989, homes located near San Francisco Bay sustained worse damage than similar homes further from the bay. The severity of the damage sustained by homes nearest to the bay is due to:

Existence of sediments and fill near the shoreline

Sediment is solid material that is moved and deposited in a new location. Sediment can consist of rocks and minerals, as well as the remains of plants and animals.

Fill is dirt/rocks made of no organic material

What members of what group act as a Decomposers?

Fungi

How is the surface of the ocean different from the bottom?

Sunlight effects the food chain between the algae and the birds

Which of the following is indicated by the size of the mineral in an igneous rock sample?

How long the rock took to cool as it formed

Which of the following changes is an example of natural selection?

The percent of beetles that are genetically darker in color increases in population that expand from prairie into forest.

Which of the following statements about requirements of all living things are true?

All living things need liquid water to distribute nutrients and waste within cells and throughout the body

During the North Hemisphere winter, the sun’s path across the sky is shorter and closer to the horizon than it is during the summer. This seasonal change in the sun’s path across the sky is caused by…..

Tilt of Earth’s rotational axis compared to its orbital plane

N temperature region, which marine environment temperatures exhibits highest levels of biological productivity?

Estuaries

What is the biggest danger for the reason of loss of plants and animals?

Destruction of their habitat

AN electrical battery is made with a magnet, the coil is turning?

Attraction/repulsion between the magnetic field and the free electrons (memorize picture)

Memorize picture & S and N positions,

What is a good conductor of electricity?

Copper

Students conducting a science experiment with sugar cubes in water vs. sugar in water. What is the experiment about?

Surface area of solute

What can the new technology that measures air pressure help detect?

It can predict weather storms and severe weather conditions

What causes tectonic plates to move?

convection and heat from the mantle. Earth’s mantle decay produces hat that causes convection in the mantle

What makes the milky way and spiral galaxies different from other galaxies?

Arm extensions that spiral with new stars

Man leaves works and walks to a sandwhich shop, he talks with employees then walks back to a park bench with his work. Man sits o park bench and then heads back to work. WHat graph best reflects his action?

Displacement vs. time

Which of the following is the best refraction of light waves?

Light passing through raindrops produces a rainbow

What would a cell look like if it’s a muscle cell?

Long and tubular (skeletal) and mitochondria

Renewable energy, what stars as kinetic energy then goes to electric energy?

Windmill

Which of the following is the most acidic?

Answer is whichever is highest acidic number. 0-6 acidic, 7 nuetral (water), 8-14 basic

Periodic table- Identify noble gas as a separate group with distance properties of noble gas.

Have same number of (balance) of electrons. Very stable compare to other elements

In the study of evolution which of the following statements is most accuratetly assess the significance of the bone shown? (human+ whale, bats+cats)

look for “adaptation” or same “taxonomic family”

Carbon atoms are seen in plants, roots, steams of terrestrial plants

nutrients from water

What does the galaxy spiral and milky wave have in common?

Both have rotating discs with spiral”arms that curve out of a dense central region

Ice ball orbiting could be considered a…?

comet

What is a comet made of?

A large mass of mixed ice and dust with dust particle around it.

Rainbow colors and how we can see the patterns. The questions asks about properties of light

Human eyes can see wavelenghts of light

Which organ carries blood to the heart/body?

Veins

CHart compound with elements, line up elements together

Table salt (NaC, sodium and chlorine) or H₂0 (water hydrogen)

Crows eat corn, eggs from other birds, nuts etc, what does this say about ecological system?

They can perform at different trophic levels

It said if X (or A on a pic of a world map) has sun directly aoverhead each 15 degrees in longitude is equal to 1 hour. WHat time is it in Y? X is Africa, Y is Europe

8:00PM

Mixture of boiled and separated. After boiling one substance gets condensation and transfer to another flask while the other one remains in first flask.

Thermal conductivity

What are separation techniques for sodium chloride and sodium nitrate?

Add water to the mixture to dissolve sodium nitrate, and heat up the water

The graph showed an increase and decrease in population and size

Smallest animals can avoid predators

How is wind formed?

Uneven heating of the earth’s surface by the sun

Why iridium is only found in the layer of the earth that dates to when dinosaurs/cretaceous went extinct?

Earth has been impacted several times by meteorites

What is El nino’s effect on seagulls/fish/fisheries?

It warms the water. It disrupts whole food chains because no plankton

Los Angeles and coastal aquifiers. What’s the main concern or issue?

Costal aquifers are subjected to intrusion of seawater/salt water. Freshwater contamination

What affects the ocean tide?

The gravitational pull of the moon

What is the function of white cells in the body?

Protects body against infections

What device is used to measure a tsunami? What device is used to dectect a tsunami?

A ocean buoy

What tides occur twice a month when the Sun and Monn are at right angles to the Earth?

Neap tides

Which type of light emits energy and heat using electricity?

Incandescent light bulb

Which following property of H₂O is different from other substances?

Solid form water dense than liquid form

What is the problem with deforestation?

Erosion and loss of nutrients

What phenomena are demonstrated during evaporation?

State of water changes

The effect of current in gulf humbolt?

coriolis force

Which of the following is a characteristic for terrestrial planets and not for gas planets?

Metallic core, iron at the core

What are the hot spots in the ocean floor/tectonic plates

Volcanoes, the ring of fire

What weather effects leaves release of water. What time does transpiration decreases?

Cold day 50 degrees

Transpiration decreases in cool, humid, cloudy and still (no wind)

In lab handling which substance creates most safety concerns?

Volatile solvent acetone

What temperature does water boil/freeze?

Boils: 100 Celsius/ 212 degrees Fahrenheit

Water freezess: 0 celsius/32 F

What is something you would see happen in a chemical reaction?

Something that can’t return to its original form

Renewable energy, what starts as kinetic energy then turns to electric energy?

Windmill

In a study of evolution which of the following statements would most accurately assess the significance of the bone shown? (human + whale) bats + cats.

Same ancestry

They show you a table with several t compound and elements. Which element lined up correctly with the name/symbol?

Table salt (NaCl, sodium and chlorine), or

H20 (water and hydrogen)

Crows eat corn, eggs from other birds, nuts etc. What does this say about ecological system?

They can perform at different tropic levels