Science

Recent Questions

Science
Under which conditions are clouds formed from ice crystals? A.strong winds B.high altitude (MY ANSWER) C.low humidity D.high pressure

Science
Select three words that belong together. To do this pick one word from each of the three sets below: Set 1: Estuary, Lake, Neritic Zone Set 2: High Salt, Intermediate Salt, No Salt Set 3: Trout, coral, oyster Answer choices: A) Neritic zone, intermediate salt, oyster B) Lake, ...

Science
Blank is a round pellet of ice larger than 5 millimeters in diameter. Snow. A hailstone. Sleet. (MY ANSWER) An ice crystal.

Science
Which of the following safety measures should you observe when there is lightning. Stay away from objects made of plastic. Stay away from metals and other objects that conduct electricity. (MY ANSWER) Stay near open windows. Stay on the roof of your house.

Science
Eli sees a puddle in parking lot after a rainstorm. The next day, the puddle has gotten smaller. Which of the following most likely happened to the water in the puddle? It condensed. It evaporated. (MY ANSWER) It became colder. It transpired.

Science
Which of the following is a correct description of a tornado? A large swirling low pressure system that forms over that forms over the warm Atlantic ocean. A winter storm with wind speeds of at least 56 km/h and low visibility. A violently rotating column of air in contact ...

Science
When water droplets in a cloud combine, become too heavy, and fall to the ground, you are experiencing? Evaporation. Condensation. Precipitation. (MY ANSWER) Transpiration.

Science
What would be a great title for this question.... Which food will mold the fastest??

Science
A mixture of sugar and water can be separated by _________________. Choose all that apply. (2 points) using a magnet boiling the mixture •• evaporating the mixture•• using a filter Correct me if I'm wrong!!

maths science and geography
in a geometric sequence,the fifth term is four times the third term,and the second term is 4.if r<0 determine the value of r,the common ratio

Science
Check my answers!! Plz 1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a ...

Science Help!
Long hair is recessive in cats. Which of the following Punnett squares shows a cross that would result in the probability that 75% of the offspring will have short hair?

Science
In pea plants, purple flowers are dominant over white flowers. Which Punnet square correctly shows the cross of a plant with white flowers and a plant that is heterozygous for purple flowers? A. Aa,Aa, aa, aa B. Aa,Aa, Aa,Aa C. AA,Aa, Aa,aa D. AA,AA, Aa,Aa

Science
3. Through which process will metamorphic rock and igneous rock change into sedimentary rock?

science help
What is a genetic mutation? A:the process of decreasing chromosomes numbers to half of what the parent cell has. B:the copying of DNA to form identical daughter cells. C:a permanent change in an organisms genetic code. D: a fusion of egg and sperm cell to produce a new ...

Science
When you turn on a battery powered flashlight you transform... 1) heat into light chemical energy 2) chemical energy into electrical energy and light 3)heat into chemical energy and light 4) electrical energy and light energy into chemical energy

Class 8 Science App
Hello, Have you seen the new app MarkSharks Class 8 Science? I like it a lot.It's very interactive and makes learning fun. Please try it and tell me what you think. You can download on the Google Play Store and use it on any android device

Science
Hello, Have you seen the new app MarkSharks Class 8 Science? I like it a lot.It's very interactive and makes learning fun. Please try it and tell me what you think. You can download it here and use it on any android device.

maths lite.life science.agric.afrikaans
is it possible for me to become a medical docter without pure maths but life science??

science
if the canoe accelerates from 0 to .8 m/s in .2 s, what is the acceleration

Science Plzz correct me!!!
What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 point) ...

Science
what can fossils tell you about organisms and environments of the past?

Physical Science
QUESTION---Which waves have wavelengths longer than those of visible light? MY ANSWER--Infrared light, microwaves and radio waves have wavelengths longer than visible light. Radio waves have the longest wavelength. Are there any others?

science
Scientists earlier believed that the lowest measurable temperature is the freezing point of ice. However, modern scientists believe that temperatures below the freezing point of ice can also exist. What best accounts for these different opinions? scientists propose ...

Science
1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...

Physical Science
I am having trouble coming up with an answer to this, and I can't seem to find it in my textbook....can I get a little help? QUESTION---Explain why the speed of sound is faster in solids than in gases

Physical Science
QUESTION GIVEN---Thermal conductors don’t have to be hot to transfer heat. According to Ch.16, explain a situation when an ice cube would still transfer heat to another object it is in contact with. MY ANSWER---Because, the ice may be trying to transfer cold, but if the ...

Science
Beach sand contains plenty of the mineral quartz. Why should you not put your plastic sunglasses down on the sand at the beach?

science
why does the sun appear to move westward across the sky during the day? a) because earth rotates to the east b) because earth rotates to the west c) because the sun moves in a westerly direction d) because of the way you are looking into the sky

Science
Two objects with charges of +1.0 c and -1.0 c are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.

science
after striking the floor a ball rebounds 4/5th of the height from which it has fallen find the total distance travelled before coming to rest considering its dropped from 100m

Science HELP!
2:What is the genetic code? A:The order of amino acids in proteins makes up the genetic code. B:The order of amino acids in mRNA makes up the genetic code. C:The order of nitrogen bases in tRNA makes up the genetic code. D:The order of nitrogen bases in DNA makes up the ...

science
2. which of the following statements about the inner planets is true ? ( 1point ) A. they all have rings b. they have all abundant liquid water c. they all have many moons d. they are small and have rocky surfaces

science
what will be the pH and normality,when 33.6liters of HCl having 1.179 s.g. and 36%concentration is mixed with 736 liters of distilled water

Science
What will be the pH and Normality when 33.6 liters of HCL having 1.18 s.g.and 36% concentration

Science
A tank which is raised above the ground level, has a hole in its flat base, through which water flows and falls to the ground below. If the depth of water in the tank is 0.5 m and the tank base is 0.7 m above the ground, what is the fluid velocity (u) (m/s) just before it ...

science & technology
when a body immersed in water from spring balance and shows 100gm weight loss. what is the weight of the body in water? 2)what is the weight of the body in air? 3)what is the upthurst on the body? 4) what is the volume of the body? give reason

Science
Which direction will a positive charge move if it is placed in the electric field surrounding a proton? Which direction will a positive charge move if it is placed in the electric field surrounding an electron?

science
formula for kinetic energy?

Science
If a dune moves 40m a per year, how far does it move in 1 day

Science
Mario and sheen a were thirsty after a long bike ride, so they stopped to get a glass of lemonade. Their friend Andy was selling lemonade. He poured the lemonade into the two glasse. Before they start drinking sheena who had the shorter glass complained that she had paid the ...

Science
How Andy could prove his two customers got the same amount of lemonade

Science
A body initially at distance given an acceleration of 12/s2 (squared2 ). Find the velocity after it travelled 205. Q2. A body moving in linear motion start with an initial acceleration after 205 was 12m/s2. What's the velocity at this instance?

Science
What are some every day uses that have the same function as Golgi Bodies?

science
A box is placed on rough surface.it has a normal force of magnitude 120N.a force of 20N applied to the right cannot move the box.calculate the magnitude and direction of the friction forces

SCIENCE
How does gravity affect growth

Science
An electromagnet in a galvanometer A. Increases the voltage in a circuit B. moves a pointer along a numbered scale in response to a current. C. induces an electric current. D. increases the current in a circuit. I got A, but apparently that is wrong....a little help?

Science
Two objects with charges of +1.0 and -1.0 are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.

Science
If the current in a wire is directed upward, what is the direction of the magnetic field produced by the current? A. counterclockwise B. clockwise C. in the same direction as the current D. in the opposite direction to the current D?

Physical Science
A ferromagnetic material is A) always a magnet B) a magnet if it's domains are aligned C) a magnet if it's domains are not aligned D) never a magnet I think it is A....

Science/ela
how and why do theories change .150 words rflect on pluto.i bet no one person can answer this

Science
what are 6 contributions to pluto being demoted .I need date and names of the people

Science
a man runs a distance of 197.5 km in 200 minutes and he reduced his speed by 5 kmph in every 30 minutes. how much distance he will cover in 1 hour of his journey

Science
How much weight of a 50 kg boy who's pushing a 30 kg crate?

Science
A ferromagnetic material is A) always a magnet B) a magnet if it's domains are aligned C) a magnet if it's domains are not aligned D) never a magnet I'm pretty sure it's A....

Science
Which of the following determines the type of biome classification that will be made for a particular region? A.climate B.size C.mineral deposits D.number of human settlements* Thank you for the help

science(physics)
the no of wave in 6cm of vacum is same as that of no of wave in xcm of medium refractive index of given medium is 3/2 find the value of x

Physical Science
You drop a water balloon off of a tree branch, and you time the drop time at Δt = 1.16 sec, from the instant you drop it to the instant it impacts the sidewalk. What is the height of the tree branch?

Fourth grade math - math book PearsonRealize
Homework 6-3 (1) Kareem has 216 role-playing game cards. His goal is to collect all 15 sets of cards. There are 72 cards in a set. How many more cards dose Kareem need to reach his goal? (2) Nichole has $9 to spend on cards. She finds friends with the same amount of money to ...

Science
Explain why some proteins are made by nearly all cells and give two examples

science
Humans have looked at planets

science
A fairy tale about chloroplasts invasion and got into animals

pls help me science
A cloud forms around 45° south latitude and is carried through the atmosphere on the Westerlies. As the water molecules in the cloud move through the atmosphere, which step in the water cycle is most likely to happen next? The molecules cool and eventually condense. The ...

science
the normal boiling point of liquid oxygen is -182•97°c what is the temperature on the Kelvin and Fahrenheit scales?

Science
Two objects with charges of +1.0 and -1.0 are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.

science help
Which statement below best describes the temperature of the atmosphere at various altitudes? The mesosphere has a lower temperature than the thermosphere. The mesosphere has a higher temperature than the thermosphere. The temperature of the mesosphere is the same as the ...

Science
A compound on analysis as 87:8% c,12:2%h determine its empirical formular&molecular formular given mass=56gmol

SCIENCE Please help
A cloud forms around 45° south latitude and is carried through the atmosphere on the Westerlies. As the water molecules in the cloud move through the atmosphere, which step in the water cycle is most likely to happen next? The molecules cool and eventually condense. The ...

science help PLS
Which of the following correctly describes a way in which Earth’s atmosphere interacts with the hydrosphere? Living organisms breathe gases in the atmosphere. Water moves between Earth’s surface and the atmosphere. Gases in the atmosphere trap incoming solar radiation. ...

Physical Science
The current in a hair dryer measures 15.0 amps. The resistance of the hair dryer is 8 ohms. What is the voltage? A. 120 V B. 0.5 V C. 7 V D. 1800 V I tried this and got D but it was wrong....can I get a little help on how to do this?

Science
1. Which of the following traits is acquired? A.) The number of petals that grow in a plants flower B.) the wing shape of a wild bird C.) The ability of some gorillas to learn sign language** D.) A cheetah’s ability to run faster than any other land animal 2. The height of a...

Science
3. A gene is to a chromosome as? A.)A pea is to a pod**** B.)A front is to a back C.)A bike is to a car D.)A building is to a window 4.What is heredity? A.)Is acquired later in life B.)The study of reproduction C.)The process of having offspring D.)The passing of traits from ...

SCIENCE HELP PLZ HELP PLZ
Which is one advantage of sexual reproduction? A. More offspring are produced ** B. More offspring survive to maturity C. The offspring have more genetic Variation D. The offspring and the parents are identical. PLZ HELP ME IS IT A?

Science
1. Which of the following is true about mixtures? (1 point) Mixtures consist of two or more substances chemically combined. Mixtures cannot be separated by physical means. Mixtures consist of only one kind of atom. Mixtures have two or more substances mixed together, but are ...

Mathematics,Science(physics,chemistry and biology)
Two similarly charged identical ping pong balls are suspended from the common support with the help of two threads.Calculate angle between the two threads and also calculate the tension in two strings.

science
Which one of the solution have high boiling point 1m H3PO4 or 1m CaCl2 ?

science
calculate the temperature of the gas when volume is 12m^3, if initially the volume was 8m^3 and its temperature was 30 °c.calculating by using charles laws.

Maths Literacy,Tourism, Geography and Life science
Which type of Job can I get while doing General Subjects and which course can I take in University or college?

computer Science
1. Create a program which will allow the user enter ten numbers. The program is to count how many numbers were above 50. Hint: You will need to incorporate a Selection (If…then) statement.

U.S. History (Check, Please!)
What was the significance of the Soviet Union's launching of Sputnik in 1957? A: The Soviet Unions's launching of Sputnik in 1957 led Congress to create the National Aeronautics and Space Administration (NASA) to coordinate research in rock science and space exploration. It ...

science
if your doing an experiment about if sugar or salt will caused fermentation within the yeast.and you have Cup 1 with 2 cup of warm water ;2tsp of yeast and 2tsp of salt. Than cup 2 contains warm 2 cups of water:2tsp of salt and 2tsp of yeast Finally cup 3( this is the control ...

Science
Briefly Describe A Suitable Laboratory Procedure Of Seperating A Mixture Of Nacl,Nh4cl,Pbcl2

science
A book is on top of a table.Earths gravity exerts a constant force of 15 N on the book.why does the booj not move as a result of this force ? An object is traveling in a straight line in space. No firces are,affecting it. What will happen to the objects motion? Two race cars ...

science
which of these is an example of a force being applied? A car was stuck in the mud. Two people pushed the car, but it did not move.why did the car not move even though a force was exerted on it?

science
A spaceship of mass 2000kg is moving towards planet Earth. Calculate the magnitude of the force that the earth exerts on the spaceship when the spaceship is 100km above the surface of the Earth. The Earth has a mass of 6*10 to the power of 24 kg and a radius of 6,4*10 to the ...

science
A minibus of mass 3000kg,travelling at a speed of 30m.s to the right,collides with a car of mass 1600kg,travelling at 16m.s to the right. After collision the car continues to travel to the right at a speed of 17,2m.s. Calculate the speed of the minibus immidiately after the ...

Science
A bear is running behind you, and there is a 19m pit in which you jumped in order to be saved. If your jump was 0.6 m high and you took 2 seconds time to fall into that pit. What's the colour of the Bear?

Science
All about vector

science
what mass of silver nitrate will react with 5.85g of sodium chloride to produce 14.35g of silver chloride and 8.5g of sodium nitrate,if the law of conservation of mass is true?

computer science
Create a program that uses the preceding formula and displays the result, but this time, prompt the user for the values a, b, x, and y. Use appropriate variable names and naming conventions.

maths literacy,life science, tourism,geography,English, Afrikaans,L.O
what career path should i take with these subjects

science
what temperature must a gas at 0 degree Celsius if its volume is to double while its pressure remains the same ?

Science
In a vacuum the coloured particles would move very quickly... why did they move so much more slow in your solutiin.

Science
It has been hypothesized that chloroplasts originate from photosynthetic cyanobacteria that became symbiotic inside a host cell.Which of the following observations provides the strongest evidence for this suggestion. A. Microscopically, chloroplasts appear similar to ...

science
Large craters are visible on the moon but not common on the earth's surface. Which of the following is the beady explanation of why large craters are not evident in the earth's surface in photos taken from space. A.three quarters of the earth's surface is covered by land. B....

Science
New seafloor rock is continually being formed at mid-ocean ridges and old seafloor rock is continually removed at ocean trenches. If the rock on the continents compare with the age of the oldest rocks on the seafloor ?

science
Which of the following factors is the most likely explanation for an energy deficit that results in exercise-induced exhaustion. A.Insufficient protein production B.Insufficient mitochondrial function. C.Impair urea elimination. D.Absence of oxygen transporters on the membrane...

Science
How to find the amount of diploid cells, haploid number of chromosoems, and number of autosomes

science
HNO3+HI->NO+I2+H20

Science
An airplane from rest accelerates on a runway at 5.50 m/s2 for 20.25s until it finally takes off the ground. What is the distance covered before take off?

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