PHYSICS MIDDLE SCHOOL

What currents are responsible for powering the movement of tectonic plates ? A. Platonic B. Tectonic C. Convection D. Plutonium

Answers

Answer 1
Answer: the currents responsible for powering the movement of tectonic plates is convection currents which occur in the mantle. As the hotter, less dense liquid rises it displaces the cooler more dense liquid which moves the tectonic plates out of allignment
Answer 2
Answer:

Convection currents are responsible for powering the movement of tectonic plates.

Related Questions

If a man has a made of 83 kilograms on earth, what will the force of gravity on his body on the moon
The chart shows data for four moving objects.ObjectFinal Velocity(m/s)29Change inTime (s)Initial Velocity(m/s)11101220WXYIZWhich object has the greatest acceleration?34OwOZ
Which body system processes into a useable source of energy
Calculate the density of a sample of gas with a mass of 30 g and volume of 7500 cm3.
PLEASE HELP ME! A uniform rod XY of weight 2.0 N has a length of 80 cm. The rod is suspended by a thread 20 cm from end X. A weight of 5.0 N is suspended from end X. A student hangs a 6.0 N weight on the rod so that it is at equilibrium. What is the distance of the 6.0 N weight from end X.

How much energy is given to each coulomb of charge passing through a 6 V battery

Answers

1 volt = 1 joule per coulomb. Current doesn't actually pass 'through' a battery. But if it did, then each coulomb would gain or lose 6 joules in traversing 6 volts, depending on its sign, and whether it climbed or fell.

A cube is measure 1 cm on each side and has a mass of 2 grams. Will it float on water?

Answers

Density = mass/volume
The density of water is 1g/cm^3

Density of the cube=2g/1cm^3
Density=2g/cm^3
Anything over the density of water will sink. The cube will not float.

Will a cart rolling up and down a ramp have a faster or slower acceleration than a ball being thrown straight up into the air? (Assume up the ramp is positive and the origin is the starting point of the cart)

Answers

a ball being thrown straight up would excel faster.

What type of sex chromosome will be contained by the sex cells of a female giraffe? A.
X chromosome only

B.
Y chromosome only

C.
X and Y chromosomes

D.
egg cells do not contain sex chromosomes
A pea plant is heterozygous for height (Tt). Which allele will be carried by a pollen grain produced by the plant?

A.
T only

B.
t only

C.
T and t

D.
T or t
Which term describes the example below?

A white cat has a mother that is homozygous dominant and a father that is homozygous recessive.


A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A rabbit’s cells have two sex chromosomes that are different.


A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A child with no freckles has a mother who has freckles and is heterozygous and a father who has no freckles and is homozygous recessive.


A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A child with a widow’s peak has a mother who is homozygous dominant for a widow’s peak and a father who is homozygous dominant for a widow’s peak.

A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male
Which term describes the example below?

A puppy’s cells have two sex chromosomes that are the same.

A.
homozygous dominant

B.
homozygous recessive

C.
heterozygous

D.
female

E.
male

Answers

1. X chromosome only

2. T or t

3. heterozygous

4. male

5. homozygous recessive

6. homozygous dominant

7. female

14. Looking ahead: Give an example of how the Law of Conservation of Energy applies to eating your favorite meal. Give at least 2 energy transformations.(5 pts)

Answers

Answer:

The law of conservation of energy applies to eating your favorite food in that the energy contained in the food is being converted to energy usable for the body system after the final digestion(Glucose or simple sugar, amino acid, etc)

Examples of transformation of energy include

(1) Transformation from Chemical energy in battery to light energy in bulb

(2) Transformation of Electrical energy to thermal/Heat energy in electric stove.

Explanation:

The law of conservation of energy states that energy can neither be created or distroy. It can only by converted from one form to another.

Oceans receive freshwater from precipitation and rivers. Yet ocean levels do not change very much from these actions. Why are ocean levels not greatly affected?

Answers

Ocean levels are not greatly affected because when water is deposited or received from the ocean, at the same time water is being evaporated from the ocean to condense in the clouds and them form into precipitation.

Two reasons:

1).  Because oceans are big and deep, and have a lot of water in them,
while by comparison, rivers are narrow, shallow, and carry less water.
It's like using a hundred droppers to pour water into an olympic-size pool.
The level of the water in the pool doesn't change much.

2).  Because the sun shines on oceans, and tons of water evaporates
from them.  That's where the water comes from to make rain and snow,
and to keep the rivers full, so that they can keep flowing into oceans.
It's a cycle.  The same water flows into the oceans from the rivers,
then evaporates from the oceans, fills the rivers, and flows into the
oceans again . . . millions of times.
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Krista and Blaire are identical twins that were separated at birth. Both of the girls are scared of thunder when they are young. Krista's adoptive parents teach her to deal with her fear by pretending that the thunder is a big drum in an orchestra. Blaire's adoptive parents, on the other hand, teach her to deal with her fear of thunder by thinking about sunny days ahead.Both girls have inherited a fear of thunder. The difference in their way of dealing with this fear, however, can best be explained by differences in their _______.