STAAR 8TH SCIENCE REVIEW

STAAR 8TH SCIENCE REVIEW

Multiple Choice

If a cube has a mass of 50 grams and a volume of 10cc, what is its density?

• 10/50 = .2 cc/g

• 10cc x 50 g = 500 gcc

• 50g/10cc = 5 g/cc

• not enough information

Multiple Choice

What is the speed of a car travelling 50m in 4s?

• 200 m/s

• 12.5 m/s

• 12.5 m

• 200m

Multiple Choice

Which skier has 100% potential energy?

• A

• B

• C

Multiple Choice

Sarah observes and records these moon phases.

Which phase will she observe on Night 15?

• A

• B

• C

• D

Multiple Choice

The tilting of the Earth on its axis contributes to:

• the different phases of the moon we see

• the changing of seasons as Earth moves around the Sun

• high and low ocean tides

• an increase in the gravitational force from the Sun

Multiple Choice

What phase comes BEFORE this one?

• Waxing Crescent

• Waxing Gibbous

• Waning Gibbous

• Waning Crescent

Multiple Choice

Which is the correct formula for:

three hydrogen (H)

one sulfur (S)

four oxygen (O)

• H₃SO₄

• HSO₄

• H₄S₃O

• H₂O

Multiple Choice

What is found in the nucleus of atoms?

• Protons and electrons.

• Protons, neutrons, and electrons.

• Protons and neutrons.

• Neutrons and electrons.

Multiple Choice

Which is an electron?

• A

• B

• C

Multiple Choice

Mechanical Energy is transferred to _____ Energy.

• Solar

• Mechanical

• Electrical

• Potential

Multiple Choice

What is happening at A?

• Stationary

• Accelerating

• Slower steady speed; moving away from the starting position

• Steady speed; returning to start position

Multiple Choice

<--------8N 4N-------->

• 2N

• 12N

• 4N

• 32N

Multiple Choice

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

• 100 Newtons, same direction

• 100 Newtons, opposite direction

• 200 Newtons, opposite direction

• 200 Newtons, same direction

Multiple Choice

How is this an example of Newton's Third law

• Only the ball is using the head

• only the head is pulling the ball

• They are both exerting an equal force on each other

Multiple Choice

Which of the following components of the universe is best described a system of stars, gases, and dust held together by gravity?

• a nebula

• a planet

• a meteor

• a galaxy

Multiple Choice

Which of the following describes a nebula?

• A cloud of gas and dust where new stars form

• An oval-shaped cluster of densely packed stars

• An explosion at the end of a giant star’s life

• A star and all the planets that revolve around it

Multiple Choice

A system of stars, gas, dust, and dark matter bound together by gravity is called -

• an asteroid

• a moon

• a galaxy

• a nebula

Multiple Choice

If the new moon must always be between the sun and Earth where should a student put the "sun"

• Position 1

• Position 2

• Position 3

• Position 4

Multiple Choice

Name the phase of the moon for letter a

• First Quarter

• Last Quarter

• Waxing Gibbous

• Waning Gibbous

Multiple Choice

Name the phase of the moon for letter a

• First Quarter

• Last Quarter

• Waxing Gibbous

• Waning Gibbous

Multiple Choice

Which side of this island is the steepest?

• South

• North

• East

• West

Multiple Choice

Match the topographic map to its profile.

Multiple Choice

It is steep on a topographic map where __________.

• lines are closest together

• a river flows into a lake

• contours bend

• contours are far apart

Multiple Choice

Which of the following best describes the tilt of the earth when it is summer in the southern hemisphere?

• The northern hemisphere is tilted toward the sun

• The northern hemisphere is tilted away from the sun

• The southern hemisphere is tilted toward the sun

• The southern hemisphere is tilted away from the sun

Multiple Choice

What does the earth's tilt cause?

• The seasons

• Day and Night

• Tsunamis

• Earthquakes