Astronomy Chapter 4-4.3

Compare the energy of a 1-megaton hydrogen bomb to the energy released by a major earthquake.

If the United States obtained all its energy from oil, how much oil would be needed each year?

Compare the Sun's annual energy output to the energy released by a supernova.

The light from Polaris travels through space in the form of BLANK energy.

Rapidly moving comets have more BLANK energy than slowly moving ones

An apple contains BLANK energy that your body can convert into other forms energy.

Nuclear fusion in stars converts some of the BLANK of hydrogen nuclei into light and heat.

Due to its much higher density, water heated to 80 degrees (Celsius) contains more BLANK energy than air at the same temperature.

An asteroid that is moving farther from the Sun is gaining BLANK energy.

kinetic energy

radiative energy

potential energy

A hot summer day might be 100.Ice cream is stored in freezers at 26.

Liquid water boils at 100. A typical room temperature is 24 .Water freezes into ice at 0.

Water boils into gas phase at 373.15.The coldest possibletemperature is 0.

Which object has the most kinetic energy?

units of energy

Suppose that two objects collide. Which of the following things is NOT the same both before and after the collision?

Suppose you heat up an oven and boil a pot of water. Which of the following explains why you would be burned by sticking your hand briefly in the pot but not by sticking your hand briefly in the oven?

Which of the following scenarios correctly demonstrates the transformation of mass into energy as given by Einstein's equation, E = mc2?

Which of the following is a form of electrical potential energy?

The amount of gravitational potential energy released as an object falls depends on

When a rock is held above the ground, we say it has some potential energy. When we let it go, it falls and we say the potential energy is converted to kinetic energy. Finally, the rock hits the ground. What has happened to the energy?

Which of the following statements correctly describes the law of conservation of energy?

A basketball player jumps to make a basket, and remains in the air for a moment. A sportscaster, talking about the game, then remarks that she has "defied gravity." Which of the following accurately describes the situation?

Of the temperature ranges below, which range represents the smallest range of actual temperature?

The ultimate source of energy that powers the Sun is

In the formula E = mc2, what does E represent?

What quantities does angular momentum depend upon?

As an interstellar gas cloud shrinks in size, its gravitational potential energy:

If you are driving at 30 miles per hour and increase your speed to 60 miles per hour, you quadruple your kinetic energy.

Compared to its angular momentum when it is farthest from the Sun, Earth's angular momentum when it is nearest to the Sun is:

a conserved quantity?

If you double the mass of fusion material in a hydrogen bomb, you quadruple the amount of energy generated.

A skater can spin faster by pulling her arms closer to her body or spin slower by spreading her arms out from her body. This is due to

Gasoline is useful in cars because it has

T/F When energy is converted from one form to another, a tiny amount is inevitably lost

Absolute zero is

Newton's second law of motion tells us that the net force applied to an object equals its

Which of the following statements is not one of Newton's laws of motion?

Suppose an object is moving in a straight line at 50 miles/hr. According to Newton's first law of motion, the object will

Which of the following describes a speed, according to an astronomer?

Choose the correct description of an object that is accelerating?

Compared to their values on Earth, on another planet your

If your mass is 60 kg on Earth, what would your mass be on the Moon?

Momentum is defined as

If an object's velocity is doubled, its momentum is

What would happen if the Space Shuttle were launched with a speed greater than Earth's escape velocity?

Standing on the surface of the Earth you drop a rock down a well and it falls for 5 seconds before hitting the bottom. How fast is it moving when it hits the bottom of the well? Neglect air resistance.

As a giant cloud of gas collapses due to gravity, you would expect its rate of rotation to

Which of the following represents a change from potential energy to kinetic energy?

Suppose two objects are attracting each other gravitationally. If you double the distance between them, the strength of their gravitational attraction __________.

Which of the following are allowed orbital paths under gravity?

Considering Einstein's famous equation, E = mc2, which of the following statements is true?

What does temperature measure?

Radiative energy is

Where does the energy come from that your body uses to keep you alive?

When a spinning ice skater pulls in his arms, he spins faster because _________.

If you want to make a rocket turn left, you need to:

How does the Space Shuttle take off?

The fact that the Voyager spacecraft continues to travel out of the solar system, even though its rockets have no fuel, is an example of

Consider the statement "There's no gravity in space." This statement is:

Which of the following is an example in which you are traveling at constant speed but not at constant velocity?

The acceleration of gravity on Earth is approximately 10 m/s2 (more precisely, 9.8 m/s2). If you drop a rock from a tall building, about how fast will it be falling after 3 seconds?

In which of the following cases would you feel weightless?

What is the acceleration of gravity of Earth?

Suppose you lived on the Moon. Which of the following would be true?

Which person is weightless?

The escape velocity from Earth is greater for larger rockets than for small ones

You are standing on a scale in an elevator. Suddenly you notice your weight decreases. What do you conclude?

Which of the following examples describes a situation where a car is experiencing a net force?

Which of the following is the reason for the leap years?

All of the following are true. Which of the following gives evidence that Earth's orbit is not perfectly circular?