Describe the day of June 21 at the North Pole in terms of daylight and darkness
( science )

Answers

Answer 1

Answer: On June 21, as seen from the North pole ...

-- the sun has been up, and it's been light outside,
for the past three months ... ever since March 21 .

-- The sun won't set, and it won't be dark outside,
for another three months ... until September 21.

-- Here at the North pole, it stays daylight for six months straight.
Today, on June 21, we're exactly halfway through the period of
continuous daylight.

Related Questions

Based on the reactivities of the elements involved, which reaction will form products that are more stable than the reactants?A.2AlBr3 + 3Zn → 3ZnBr2 + 2AlB.CaBr2 + 2Na → 2NaBr + CaC.MgBr2 + H2 → 2HBr + MgD.BaBr2 + Ca → CaBr2 + BaE.2LiBr + Ba → BaBr2 + 2Li
(Fill in the blanks)The movement of water into and out of cells is very _____. Cells need water to ____ properly.
Which of the following most likely happens during a chemical change?No new substances are formed.Properties of a substance remain unchanged.Composition of a substance is same as before.Different atoms than before are introduced after the change.
Is the Peruvian flower angiosperm or gymnosperm
PLEASE HELP!!!A student mixed two clear liquids together in a beaker and a solid precipitate formed. His data is shown below:Liquid reactant A: 10 gLiquid reactant B: 17 gBeaker+Solid product: 32 gWhat is the mass of the beaker?a. 5 gb. 10 gc. 15 gd. 17 ge. 32 g

Calcium carbonates are incorporated into the shells of microscopic marine plants and animals and then participate into the ocean sediments this process is of which of the following A. Sediment deposition
B. evaporate deposition
C. chemical precipitation
D. Biological precipitation

Answers

The answer is: D. Biological precipitation.

Biological precipitation is the deposition of minerals from solution by the agency of organisms.

Deposition is the geological process in which sediments, soil and rocks are added to a landform or land mass.

Ocean sediments originate from numerous sources:

1) biological activity (biogenous).

2) weathering and erosion of the continents (terrigenous/lithogenous).

3) volcanic eruptions (volcanogenous).

4) chemical processes (hydrogenous).

Calcium carbonate (CaCO₃) is made of calcium, carbon and oxygen atoms.

How many atoms are in Na2CrO4

Answers

We have that for the Question "how many atoms are in Na2CrO4" it can be said that The total number of atoms is

X=7 atoms

From the question we are told

how many atoms are in Na2CrO4

Generally

In identifying the atoms are in Na2CrO4 we must first look closely at the compound Na2CrO4

We have

Na=1

Cr=2

O=4

Therefore

The total number of atoms is

X=1+2+4

X=7 atoms

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The formula shows the number of each type of atom in the molecule. There are 2 atoms of sodium, one atom of chromium and four atoms of oxygen, being a total number of 7 atoms.

A scientist is observing onion cells and human cheek cells under a microscope.Which observation does she most likely make?

The onion cells have lysosomes, and the cheek cells do not.
The cheek cells have larger vacuoles than the onion cells.
The cheek cells have a nucleus, and the onion cells do not.
The onion cells have a cell wall, and the cheek cells do not.

Answers

The onion cells have a cell wall and the cheek cells do not

Answer:The onion cell have a cell wall and the cheeks do not

Explanation: I took the test and I love the topic. Hope it helps!!!

Pine trees, strawberry plants, and cacti are all plants. Name and describe three or morecharacteristics that you think scientists could use to separate these members of the Plant
kingdom into smaller groups.

Answers

Answer:

All plants present in the plant kingdom are separated by into smaller groups.The smaller groups contains plant species which are more similar to one another.

Some of the characteristics through which plant species can be separated are:

Gymnosperm or angiosperms: Pine are gymnosperm plants whereas strawberry plants are angiosperms. Cactus is also a gymnosperm.

Their location: Plants can be separated based on their habitats. For example, Cactus are desert- plants whereas pine and strawberries are not desert plants.

They are seed- producing plants or spore producing plants: pine are spore producing plants. Strawberry are seed-producing plants.

Final answer:

Pine trees, strawberry plants, and cacti can be separated based on leaf structure, growth habit, and reproduction.

Explanation:

Scientists could use several characteristics to separate pine trees, strawberry plants, and cacti into smaller groups. Three possible characteristics include:

Leaf structure: Pine trees have needle-like leaves, strawberry plants have broad, toothed leaves, and cacti have spines instead of leaves.
Growth habit: Pine trees are tall, woody plants, strawberry plants are low-growing and produce runners, and cacti are succulent plants with thick stems.
Reproduction: Pine trees reproduce through the production of cones, strawberry plants reproduce through the production of seeds in their fruit, and cacti reproduce through the production of offsets or pups.

Learn more about Characteristics used to separate plants here:

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How does the mass of the electron compare to the masses of the proton and neutron?

Answers

The mass of protons and neutrons are both 1 amu (atomic mass unit). The mass of the electron is 0.00054. Therefore, when determining the isotopes when given mass, you only focus on the neutrons as they are the subatomic particles that are significantly affecting the atomic mass.

How many moles of sf6 are there in 459500000000000000 molecules of sf6