1 Science benchmark 2 Review
2 Through which of these objects would sound travel the fastest?The air Water in a pool A metal table Milk in a glass
3 EMMA Four friends are in a choir. Emma’s voice has the highest pitch, followed by haley’s voice, mike’s voice, and william’s voice, which has the lowest pitch. Which singer’s vocal cords vibrate the fastest?
4 How can you make the volume of sound from a trumpet increase?By holding it higher in the air By blowing into it with greater force By blowing into it with less force By holding it lower toward the floor
5 How does a prism affect white light that passes through it?It makes white light brighter It changes white light to black light It separates white light into its different wavelengths It creates a laser beam
6 The heat in the water weakens the pencil Why does a pencil appear to bend when you put it partly into a glass of water? The heat in the water weakens the pencil The light reflects off the pencil The water pressure breaks the pencil The light refracts when it passes from air into water
7 When you first sit on a car seat on a cold day, the seat may be coldWhen you first sit on a car seat on a cold day, the seat may be cold. How can the seat get warmer after you sit on it for awhile? Light energy changes to thermal energy Thermal energy transfers from your body to the seat by conduction Your body gets used to the cold seat after awhile Thermal energy transfers from the seat to your body by conduction
8 What would happen to a glass of cold iced tea if you left it in the sun for an hour on a hot day?Radiant energy would not affect the iced tea Thermal energy would convert to radiant energy and warm the tea Thermal energy would not affect the iced tea Radiant energy would convert to thermal energy and warm the tea
9 If you shine a flashlight directly at a mirror, the light will beReflected upward Bent to the left or right Reflected back to you Bent downward
10 The car’s gasoline engine The car’s heating systemWhen are car has not been driven, the tires feel cool. After the car is driven on the highway, the tires feel warm. Which of the following produces this heat? Friction Magnetism The car’s gasoline engine The car’s heating system
11 What would be an advantage of designing an airplane whose outside surface creates almost no friction? More heat would be produced during flights It would fly more slowly Less heat would be produced during flights It would be harder to fly
12 What causes day and night on Earth?Earth revolving around the sun The moon revolving around Earth Earth rotating on its axis Long and short shadows
13 What keeps the moon in orbit around earth?Ellipse Gravity Rotation Revolution
14 Earth’s rotation and tilt Earth’s elliptical orbit A solar eclipse What causes days on earth to be longer in summer, shorter in winter, and more nearly equal in spring and fall? Earth’s rotation and tilt Earth’s elliptical orbit A solar eclipse Earth’s tilt and revolution
15 A student observes two rocks that look alikeA student observes two rocks that look alike. The only difference the student notices between the rock samples is that one of the rocks breaks apart a little when scraped with a fingernail, and the other rock does not break. Which property of the rocks is the student observing? Texture Hardness Weight Color
16 The entire moon Half of the moon A quarter of the moonWhen we see a full moon from Earth, how much of the entire moon are we seeing? The entire moon Half of the moon A quarter of the moon A sliver of the moon
17 Touching the insulator Watching television Which of the following actions will change a closed circuit into an open circuit? Touching the insulator Watching television Turning off the light in a room Listening to a CD player
18 When it rains, a soil holds water well and becomes moist and stickyWhen it rains, a soil holds water well and becomes moist and sticky. The soil probably contains a large amount of _________ Sand Silt Pebbles Clay
19 How is a lunar eclipse similar to a solar eclipse?Both involve the moon blocking the sun Both involve an object in the sky blocking light Both involve Earth blocking the sun Both happen once in a lifetime
20 During the new moon phase, ______.The unlighted half of the moon faces the sun The lighted half of the moon faces Earth The unlighted half of Earth faces the sun The unlighted half of the moon faces Earth
21 Metal has a shiny surface Metal is not very dense Metal conducts heat Many pots and pans are made of metal. Which of the following states the best reason that metal is used to make pots and pans? Metal has a shiny surface Metal is not very dense Metal conducts heat Metal melts at a low temperature
22 The exposed wire can cause an electric shock The plug for an old toaster has a break in its plastic covering. Part of the copper wire is exposed. Why is it dangerous to use this toaster? The exposed wire can cause an electric shock The plastic covering can cause an electric shock The exposed wire might burn the toast There is no danger
23 How are conductors used in electric circuits?To prevent electric shocks To slow down electric charges To provide a break in electric circuits To provide a fast path for electric currents
24 Which of the following is an example of chemical weathering?Ice expanding cracks in rocks Plant roots breaking rocks as they grow Moving water scraping small rocks against larger rocks Rainwater and carbon dioxide changing minerals in rocks
25 Which of the following is not a property of minerals?Luster Streak Deposition Crystal shape
26 How can humans minimize the danger of destruction from earthquakes?Reduce carbon dioxide emissions Avoid building near fault lines Strengthen walls using sandbags Reduce physical weathering
27 Sandstone and limestone are both sedimentary rocksSandstone and limestone are both sedimentary rocks. How are they different from each other? They are made of different materials Only one was formed in a volcano They are found in different places in the world Only one can contain fossils
28 How could you use sedimentary rocks to compare the age of different fossils?The rocks near the surface have the oldest fossils The rocks farthest from the surface have the oldest fossils The fossils in limestone are the oldest The oldest rocks don’t contain fossils
29 Why is loam a better choice than sand for growing plants?Loam is darker than sand Loam contains air Loam has nutrients Loam has many particles
30 When you pluck a guitar, what energy transformation is taking place?A.) heat energy to electrical energy B.) electrical energy to mechanical energy. C.) sound energy to heat energy. D.) mechanical energy to sound energy
31 Crystal tested the hardness of rocks and mineralsCrystal tested the hardness of rocks and minerals. Which type of rock could sample 3 be? Sample Mohs hardness scale Sample Sample Sample Sample A.) talc B.) calcite C.) quarts D.) Diamond
32 Letter F represents the Wanning GibbousD C F If Letter C represents a New Moon, which phase of the moon is showing at letter B? Waxing Crescent Letter F represents the Wanning Gibbous
33 A.) Sedimentary B.) Fossils C.) Igneous D.) MetamorphicObsidian, granite, and basalt are rocks formed from molten rock that is cooled. What kind of rocks are they? A.) Sedimentary B.) Fossils C.) Igneous D.) Metamorphic
34 Brenda has made a telephone using two paper cups and a stringBrenda has made a telephone using two paper cups and a string. When she talks into one cup, her friend John can clearly hear her words through the paper cup. How does this work? This is because Brenda’s voice causes the string to vibrate and the wave travels down the string until it reaches John’s ear.
35 Two examples of sound traveling better through solids is:Putting your ear against a wall to hear people talking. Putting your ear on the ground to hear something coming (footsteps, and a train.)