The first step of a controlled scientific investigation is ______________.

The ____________ Theory states that the universe began with a period of extreme rapid expansion. (8.E.4A.2)

The Milky Way galaxy is an example of a _________ galaxy. (8.E.4A.1)

Scientists believe that the Earth's moon was created after a large object hit the Earth early in the formation of the solar system. What force keeps the moon in orbit around Earth? (8.E.4B.2)

Why do scientists monitor the positions of objects in space? (8.E.4B.1)

Our solar system contains the Sun, smaller objects such as comets and asteroids, and _____________. (8.E.4B.1)

Which best describes the long, narrow orbits of comets around the sun? (8.E.4B.1)

Astronomers believe that there are about 100,000 comets that travel throughout the solar system. Comets are chunks of ice, dust, and gas that orbit a star. Which of the following can be observed from Earth as a comet travels closer to the sun? (8.E.4B.1)

Which statement about moons is NOT true? (8.E.4B.1)

Aside from Earth, which inner planet is believed to have once HAD liquid water on its surface? (8.E.4B.1)

The force of gravity between two objects depends on _______________. (8.E.4B.2)

____________ are pieces of rock that DO NOT burn completely as they travel through Earth's atmosphere and strike the surface of a planet causing a crater to form. (8.E.4B.1)

Objects in our solar system like the Sun and Jupiter have a greater gravitational pull because they ______________. (8.E.4B.2)

Scientists measure the distance between stars and galaxies in _____________, which is the distance light can travel in one year - 9.8 trillion miles. (8.E.4A.1)

A camper looks into the night sky and sees a "shooting star". What is the source of the light from this "shooting star"? (8.E.4B.1)

Two planets with similar mass and size known as "twins" are __________ & _________. (8.E.4B.1)

Which list gives the correct order of the outer planets, starting with the planet closest to the sun? (8.E.4B.1)

Meteoroids usually come from ____________. (8.E.4B.1)

Which characteristic do all inner planets have? (8.E.4B.1)

The force that tends to pull together the matter in all objects is __________. (8.E.4B.2)

Astronomers noticed that light from stars and galaxies was stretched out and shifted to the _____ end of the visible light spectrum. This proves that the universe is still expanding. (8.E.4A.2)

Which of the following is not a type of galaxy?

The tail of a comet _________. (8.E.4B.1)

Large chunks of rock called __________ orbit the sun and are contained in a "belt" that separates the inner and outer planets. (8.E.4B.1)

Which of the following lists Earth, the Moon, Jupiter, and the Sun in order from largest to smallest? (8.E.4B.1)

Two of the inner planets are: (8.E.4B.1)

Which planet does the sun have the strongest gravitational pull on? (8.E.4B.2)

Which statement is true about the outer planets? (8.E.4B.1)

Small pieces of rock that enter Earth's atmosphere at speeds of 15 to 70 km/s and burn up due to friction forces. (8.E.4B.1)

Most asteroids are located between the orbits of which two planets? (8.E.4B.1)

Any factor in an experiment that can change is ____________.

"If the temperature was a liquid increases, then it will expand and eventually reach boiling point." This statement is an example of ________________.

During an experiment, results and observations should be organized and recorded ______________.

John and Bob want to test if the temperature of soil affects the growth of plants. What would be the manipulated variable in this experiment?

Using the acronym DRY MIX, which variable is graphed on the X-axis?

What should you do first if you spill or break anything during a scientific investigation?

According to the table above, which object has the greatest amount of inertia to overcome in order to start moving?B

In the diagram below, the car (in motion) is about to collide with the van (at rest). When the collision occurs, which best describes the motion of the driver in the car?

Newton's 1st Law states that if an object is at rest, it will _________________ until outside forces act on it.

Which would NOT be a way to increase the speed of a moving object?

If the same amount of force were applied to a blowing ball, basketball, baseball, or tennis ball, which object would move the least?

What increases when the force applied to a moving object increases?

In football, a 110 kg offensive lineman going south collides with a 130 kg defensive lineman going north at the same speed. Which direction will they travel after the collision?

Forces that are equal in size but opposite in direction are ______________.

If the rope moves toward the right (green team), the teams have ____________________.

Which of the following explains why the balloon rocket is pushed forward by the air escaping backward out of the balloon?

This picture shows a cannon's recoil (the cannon ball goes forward but the cannon moves backward) this proves that for ever ___________, there is an equal but opposite ______________.

If a student were to drop a piece of paper, what forces would act on it?

The force of gravity causes objects to speed up as they fall. What keeps some objects like a leaf from falling at the same speed as an acorn?

Which of the following is a way to increase friction on purpose?

When you graph the motion of an object, what unit goes on the horizontal axis of the graph?

The distance traveled by an object divided by the time taken to travel that distance is calculated as the ____________ of an object.

The graph above shows the distance traveled in 110 minutes. According to the graph, the person __________________________.

By looking at the graph you can see a steep line from 0 to 30 min. A steep slope indicates a _____________ speed.

Which graph best describes a person sitting on a bench waiting for the bus?

Which graph best shows a person walking away from a starting point then quickly returning?

Which graph best shows a person walking away from a starting point at a constant speed?

A train travels for 4 hours at 90 mph. What equation should be used to find the distance the jet travels?

A car travels 180 kilometers in 3 hours. What is the average speed of the car?

As waves travel from one place to another, they carry _____________.

Using the image below, the name of section A is called ____________ and section B is called ___________?

Which of the following waves can travel in outer space?

Which type of wave is shown in the image below?

A solid, liquid, or gas through which waves can travel is called a ___________.

Which number on the diagram above shows wavelength?

Which number on the diagram above shows amplitude?

Which number of the diagram above shows the crest?

Which wave in the above diagram has the lowest frequency?

The colored ring of muscle that controls the size of the pupil is called the ____________.

What type of optical telescope uses both lenses and mirrors to focus and magnify light from objects in space?

The corona releases these highly charged particles that "blow" toward Earth and can cause electrical disruptions.

Dark, cooler areas on the sun's surface are called __________?

Earth's rotation on its axis causes Earth to experience _______ & _______.