Science Exam

अब Quizwiz के साथ अपने होमवर्क और परीक्षाओं को एस करें!

Which sentence explains how the frequency and the wavelength of electromagnetic waves are related?

. As wavelength decreases, frequency increases.

At the time indicated in this diagram, what season is it in the southern hemisphere?

. winter

On a speed-time graph, a horizontal line shows the change in speed is ____.

0

All stars, including the Sun, have the following identical composition:

25 percent helium; 73 percent hydrogen; and 2 percent other

According to the trend of the line graph, if a car was traveling at a speed of 120 km/h how much breaking distance would it need?

30m

The Hubble Space Telescope orbits Earth every 97 minutes. Calculate how long it would take the Hubble Space Telescope to orbit Earth 30 times.

48 hours, 30 minutes

How would you correctly find the volume of the fish tank above? (dimensions[6m, 5m, 3m])

6m x 5m x 3m =90 meters cubed

a=(sf-si)/t. What is the formula for

Acceleration

What can be inferred about speed and breaking distance from the above graph?

As speed increases, breaking distance increases.

d/t. What is the formula for

Average Speed

An experiment is a suggested explanation for an observation. True or false

False

Gamma rays are classified as visible light. True or false

False

In the early 1500s, Tycho Brahe formulated the heliocentric model of the solar system. True or false

False

Jupiter, Uranus, Saturn, and Neptune are all outer planets listed in order as you move outward, away from the sun. True or false

False

Mars is the planet most similar to Earth in physical properties, such as diameter, mass, and density. True or false

False

Meteorology is the study of materials that make up Earth and the processes that form and change these materials. True or false

False

Researchers use a constant in an experiment to show that the results of the experiment are actually due to the condition being tested. True or false

False

The application of scientific discoveries is called tectonics.

False

The daily rising and setting of heavenly objects like the Sun is caused by the orbit of Earth. True or false

False

The difference between meteors and meteorites is their size. True or false

False

The force of gravity between two objects is determined entirely by their masses. true or false

False

The gas giants are composed primarily of lightweight elements such as hydrogen and nickle. True or false

False

The study of objects beyond Earth's atmosphere is ecology. True or False

False

Classify Planet X as an inner or outer planet and justify your classification using at least 2 pieces of evidence.

First of all, it has 35 moons, and that is usually connected to being a outer planet. Also, the distance from the sun is a ways away. In my mind, I would say that this is an outer planet.

Which of these steps would be the first step in a scientific method?

Identify the problem and determine what you want to know.

Diagram A shows how Earth's axis is tilted. Identify one way that conditions on Earth would change if Earth's axis were instead oriented as shown in Diagram B.

In diagram b, the seasons would change because there is no tilt of the axis, and that would create no seasons.

Plants under a grow lamp Week 1 Week 2 Week 3 A-no water 0in 0in 0in B-water once a day 0in 3in 5in C-water three times a day 0in 2in 4in D-water five times a day 0in 2in 0in Looking at the data above, what should a scientist do if their original hypothesis stated that the plant watered three times a day would grow the most?

Modify the hypothesis to fit with the new findings, and repeat the experiment.

p=m*v. What is the formula for

Momentum

What two gas giants appear blue because of the methane in their atmosphere?

Neptune and Uranus

Goldilocks is a character in a children's story who likes things to be "just right." The conditions on Earth are sometimes called "Goldilocks conditions." Explain using at least 3 examples.

Our planet is claimed as a Goldilocks planet because it has these three things. It has water in 3 different states, it has a slight greenhouse effect, and it has oxygen.

A scientist performed an experiment to find out how the volume of a gas depended on the pressure of the gas. The scientist placed a constant amount of the gas under different pressures and measured the volume of the gas at each pressure.

The difference is that pressure and volume are different. The volume is what the gas (if it was put in a container) could hold or how much is in the container, and that is when the pressure is a lower number, the volume will be at a much higher number.

Why is the moon's surface covered with craters, yet Earth has very few? Give information about both the Moon and the Earth.

The reason why the moon has so many craters is because it has basically no atmosphere, and that means when something is going to hit the moon, it can't protect itself. The Earth has an atmosphere to shield us from meteoroids, and other stuff like that. The atmosphere burns the meteoroids when they try to come to earth.

Asteroids are thought to be leftover planetesimals that never formed planets from the time of the solar system's formation. true or false

True

Earth reflects a greater percentage of the Sun's light that strikes it than does the Moon. True or false

True

Identifying rocks, studying glacial movements, and interpreting clues to Earth's history are all topics studied in geology. True or false

True

Mercury has the largest day-night temperature difference of all the planets in the solar system. true or false

True

Mercury, Venus, Earth and Mars are all of the inner planets in order as you move outward from the sun. true or false

True

Most scientific studies use a standard system of units called SI, which is a modern version of the metric system. True or false

True

Only one of the eight planets in the solar system has all three forms of water on its surface. true or false

True

Scientific methods are planned and organized, but can be modified (changed) as you begin to solve problems. true or false

True

The arrangement of waves that includes gamma rays, X rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves according to wavelength and frequency is called the electromagnetic spectrum. True or false

True

The biosphere includes all organisms that live within a few meters of Earth's surface, at the bottom of oceans, and on the tops of mountains. True or false

True

The electromagnetic waves associated with different colors of light can be distinguished by their frequencies. True or false

True

The inner planets have greater densities than the outer planets. True or false

True

The water in Earth's oceans, seas, lakes, rivers, glaciers, and in Earth's atmosphere makes up the hydrosphere. True or false

True

When the Moon waxes during its lunar cycle, the amount of its sunlight portion that we see appears to increase in size. True or false

True

Which of the following is one of the characteristics an object MUST have to be classified as a dwarf planet by the IAU?

a spherical shape

The measure of the amount of light given off by a star is its ____.

absolute magnitude

A measure of the amount of light received on Earth is a star's ___.

apparent magnitude

Bodies of interplanetary debris that orbit the Sun with most in the area between Mars and Jupiter are called ___.

asteroids

Small, icy bodies that have highly eccentric orbits and can be found in the Oort cloud or the Kuiper belt are called ___.

asteroids

A star that is gravitation-ally bound to another star can either be part of a star cluster or a ____ star.

binary

Acceleration involves a change in ____.

both speed and direction

What causes the dark bands observed in a solar spectrum?

different chemical elements which absorb light at specific wavelengths

Speed is the rate of change in ____.

distance

Absolute magnitude takes distance into account when indicating the surface temperature of a star. true or false

false

If you are driving up a curvy mountain road, your displacement would be greater than your distance. true or false

false

If you travel through a city and find that you travel 5 km in 30 minutes, you could say that your constant speed is 6 km/h. true or false

false

Motion is a change in direction. true or false

false

Scientists gather evidence about the Sun's composition by directly sampling material from the Sun. true or false

false

Stars more massive than the Sun use up their fuel at a slower rate. true or false

false

The high concentration of carbon dioxide (CO2) in the atmosphere of Mars inhibits infrared radiation from escaping and keeps the surface extremely hot. true or false

false

The momentum before a collision of three objects is always greater than the momentum after the collision. true or false

false

The slope of the line on a speed-time graph tells the speed. true or false

false

What force draws the matter in an interstellar cloud together to form a star?

gravity

A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly. Which of the following is the dependent variable?

how far the plane flew

Momentum is a measure of ____.

how hard it is to stop an object

When object A collides with object B and bounces back, its final momentum is ____ its initial momentum.

in the opposite direction of

The momentum of a falling leaf is _____ the momentum of a falling rock.

less than

The sequential changes in the appearance of the moon are called _____.

lunar phases

If an object is moving at a constant velocity and you want to change its momentum, you would change its ____.

mass

The ____ of a star determines its temperature, luminosity, and diameter.

mass

The result when Earth intersects a cometary orbit is a(n) ___.

meteor shower

Interplanetary material that enters the Earth's atmosphere and collides with the ground rather than burning up is called a(n) ____.

meteorite

If you exert a force on an object in motion you will change its ____.

momentum

To have a momentum greater than zero, an object must be ___.

moving

Which phase is the Moon in when the Earth, Sun, and Moon are in the positions shown in the diagram?

new moon

A scientist looking for an optimal location for a new observatory should choose a location ____.

on a remote hilltop

The distances to nearby stars can be measured by using ____.

paralax

People who see a partial solar eclipse are located in the ___ portion of the Moon's shadow.

penumbra

Most of the light emitted by the Sun comes from the ___.

photosphere

A main sequence star becomes a ___ after it uses up the hydrogen in its core.

red giant

Inertia ____.

resists a change in motion of an object

A lunar eclipse occurs when the Moon passes through Earth's ___.

shadow

Earth is bombarded with particles and radiation after violent eruptions from the Sun's surface called ____.

solar flares

What is flowing outward from the corona to the entire solar system?

solar wind

Which of the following terms describe the terrestrial planets?

solid and similar in size to Earth

To describe velocity you need to know ____.

speed and direction

The Law of Conservation of Momentum says that if no external forces are acting on colliding objects, then the total momentum _____.

stays the same

Which of the following is NOT an activity usually performed by oceanographers?

studying the processes that cause the atmosphere to produce weather

In the northern hemisphere, what day is represented by this diagram?

summer solstice

Which day is it in the northern hemisphere when the sun's most direct light hits the Tropic of Cancer?

summer solstice

Dark, cooler areas on the Sun's surface are called ___.

sunspots

A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly. Which of the following is the control?

the airplane with no paperclips added

A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly. Which of the following is the independent variable?

the number of paperclips added

A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly. Which of the following is a controlled variable (constant)?

the same airplane for each trial

When a toy truck collides into a toy car, the momentum of ____ is the same before and after the collision.

the truck plus the car

What is the main reason why Venus' surface is so hot?

the very efficient greenhouse effect on Venus

When you graph the motion of an object, you put ____ on the horizontal axis and ____ on the vertical axis.

time, distance

As a moving object's velocity decreases, its momentum decreases. true or false

true

As a star ages, its internal composition changes as nuclear reactions in the star's core convert one element into another. true or false

true

Compared to the human eye, telescopes can collect light over longer periods of time. True or false

true

Earth is the most tectonic-ally active of the inner planets. true or false

true

Other than the use of special instruments, the chromosphere is only visible during a solar eclipse when the photosphere is blocked. true or false

true

The Sun is almost entirely composed of hydrogen and helium. true or false

true

The state of matter found in the Sun's interior is plasma. true or false

true

Two objects have a mass of 70 kg. Their momentum is _____.

unknown


संबंधित स्टडी सेट्स

TestOut LabSim Chapters 10-13 Test Practice

View Set

Chapter 2.1: Classical Atomic Theory

View Set

Potter and Perry, Fundamentals: Chapter 36 - The Experience of Loss, Death, and Grief

View Set

Gastrointestinal Structural & Inflammatory Disorders (Ch. 23 ATI)

View Set

Gem and Gem Minerals Old Final Exam Questions

View Set

OSHA 30 Module 17 Fall Protection

View Set

Chapter 14: Money, Banks and the Federal Reserve System

View Set