Question 1

Earth’s magnetic field protects us from:

Accepted Answer

solar wind

Answer

tsunamis

Answer

solar flares

Answer

auroras

Question 2

What is an effect of lower levels of solar radiation hitting Earth?

Accepted Answer

decreased rates of photosynthesis

Answer

increased phytoplankton activity

Answer

decreased carbon dioxide levels

Answer

increased incidences of skin cancer

Question 3

Which of these best describes Earth's hierarchy in space?

Accepted Answer

Earth, solar system, galaxy, local group, supercluster, universe

Answer

Earth, solar system, local group, supercluster, universe

Answer

Sun, Earth, solar system, local group, universe

Answer

Earth, solar system, local group, galaxy, universe, supercluster

Question 4

Theory that the universe began 13.7  billion years ago as a singularity that expanded is called

Accepted Answer

the Big Bang Theory

Answer

The Theory of plate tectonics

Answer

The Theory of universal gravitation

Question 5

Which statement describes Earth's motion around the sun?

Accepted Answer

Speed increases the closer Earth is to the sun and decreases the farther it is from the sun.

Answer

Speed increases the farther Earth is from the sun and decreases the closer it is to the sun.

Answer

speed of Earth is constant regardless of its distance from the sun.

Answer

The speed of Earth is constant because the distance remains the same between Earth and the sun.

Question 6

Which statement is true?

Accepted Answer

Earth rotates on its axis and revolves around the sun

Answer

Earth rotates around the sun every 365 days

Answer

Earth revolves on its axis every 24 hours

Answer

Earth revolves on its axis and rotates around the sun

Question 7

What causes Earth's seasons?

Accepted Answer

The tilt of Earth's axis as it revolves around the sun

Answer

the retrograde motion of Jupiter

Answer

regularly timed solar flares from the sun

Answer

The straight alignment of the sun, moon, and Earth

Question 8

Why can it be winter for the northern hemisphere in December, but summer in the southern hemisphere?

Accepted Answer

The northern hemisphere is tilted away from the sun in the winter and the southern hemisphere is tilted toward the sun, causing it to be summer in the southern hemisphere

Answer

Because the moon sometimes gets in the way of the sun and causes the northern hemisphere to cool down

Answer

The perihelion occurs in the Winter, causing the southern hemisphere to become warmer

Answer

The uneven heating of the Earth causes sunlight to be directed more towards the southern hemisphere in December

Question 9

Which natural phenomenon occurs as a result of Earth rotating on its axis?

Accepted Answer

day and night

Answer

seasons

Answer

movement of tectonic plates

Answer

deep ocean currents

Question 10

How does the tilt of Earth's axis affect the seasons?

Accepted Answer

by changing the amount of direct solar energy reaching the surface of Earth

Answer

by deflecting the harmful rays of radiation emitted by the sun

Answer

by influencing the rate of chemical reactions occurring in the atmosphere

Answer

by changing the speed of the rotation of Earth

Question 11

How does heat from the sun get to Earth?

Accepted Answer

by radiation, using electromagnetic waves to transfer the heat

Answer

by convection, using liquids and gases to transfer the heat

Answer

by conduction, using solids to transfer the heat

Answer

by absorption, using primary waves to transfer the heat

Question 12

Which describes the difference between nuclear fission and nuclear fusion?

Accepted Answer

Nuclear fission splits a heavier nucleus into smaller nuclei, and nuclear fusion is the process that produces the radiant energy of stars.

Answer

Nuclear fission produces energy in nuclear power plants, and nuclear fusion produces the energy in the core of Earth.

Answer

Nuclear fission produces the energy in the core of Earth, and nuclear fusion produces energy in nuclear power plants.

Answer

Nuclear fission is produced in stars, and nuclear fusion splits nuclei into smaller nuclei.

Question 13

How does a straight alignment between Earth, the sun, and the moon impact the
tides on Earth?

Accepted Answer

It produces the greatest change in high and low tides

Answer

It produces the least change in high and low tides.

Answer

It produces diurnal tides.

Answer

It produces semidiurnal tides.

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