Energy On The Move
Philip is going to stir some soup he is cooking in a pot. The soup is very hot. Which spoon would transfer the most heat energy?
A. wood
B. metal
C. plastic
D. rubber
b. metal
Carlos is making caramel apples. He melts sugar in a pan. He watches carefully as the sugar turns brown and becomes caramel. He pushes a stick into the top of an apple. Then he stirs the apple in the caramel.
Which of the actions is a chemical reaction?
A. the sugar dissolving
B. sugar becoming caramel
C. the stick piercing the apple
D. the caramel covering the apple
B. sugar becoming caramel
Cars, bicycles, and people can all be objects in motion. What is it about an object in motion that is constantly changing?
A. speed
B. velocity
C. position
D. acceleration
C. position
Wind, water, and ice are involved in both weathering and erosion. However, weathering and erosion are two different processes. Which sentence states a difference between weathering and erosion?
A. Erosion moves rocks to a new location. Weathering breaks rocks down into smaller pieces.
B. Weathering moves rocks from place to place. Erosion breaks rocks down into smaller pieces.
C. Erosion breaks down rocks but does not move them. Weathering moves rocks to a new location but does not break them down.
D. Weathering moves rocks without breaking them down. Erosion moves rocks without breaking them down.
C. Erosion breaks down rocks but does not move them. Weathering moves rocks to a new location but does not break them down.
One day on Earth is 24 hours. Some planets have shorter days. Other planets have longer days. What determines the length of a planet’s day?
A. tilt
B. moons
C. rotation
D. revolution
C. rotation
Lisa stirs some hot, apple cider with a metal spoon. Which sentence explains what happens to the spoon?
A. Heat from the hot air will heat the spoon.
B. Heat from the hot liquid will cool the spoon.
C. Heat from the hot liquid will heat the spoon.
D. Heat from the hot liquid will not have any effect on a metal spoon.
C. Heat from the hot liquid will heat the spoon.
The class discussed different things they could do to a piece of wood. Which of the following would be a chemical change?
A. The piece of wood could be nailed to another piece of wood.
B. The piece of wood could be burned in a stove to heat some rooms.
C. The piece of wood could be broken up into smaller pieces for firewood.
D. The piece of wood could be ground up and made into mulch for a garden.
B. The piece of wood could be burned in a stove to heat some rooms.
Mia wants to know how fast a ball rolls down a ramp. Which action would best help her find this out?
A. construct a prediction
B. measure the ball's speed
C. explain why the ball rolls so fast
D. observe the ball rolling on the floor
B. measure the ball's speed
Minerals are identified and sorted by different characteristics. Luster is one way to sort minerals into different types. What is a mineral’s luster?
A. the way that light reflects from its surface
B. the color that it makes when rubbed on a tile
C. the mineral’s elements and their arrangement
D. the way that it breaks when you strike it with a hammer
A. the way that light reflects from its surface
Which statement about star patterns is true?
A. Star patterns are only visible during certain seasons.
B. Star patterns are only visible during the day.
C. Star patterns are only visible in the Northern Hemisphere.
D. Star patterns are only visible in the Southern Hemisphere.
Star patterns are only visible during certain seasons.
Devon writes a summary about heat energy and how it can cause a change in temperature.
Which statement should Devon include in his summary?
A. Heat is transferred only by cooking.
B. Heat always moves from cold objects to hot objects.
C. Heat always moves from hot objects to cold objects.
D. Heat is transferred only by the radiant energy of the sun.
C. Heat always moves from hot objects to cold objects.
Chemical changes occur when the particles of one substance are rearranged to form a different substance. Which of the following is a chemical change?
A. bending
B. burning
C. freezing
D. shredding
B. burning
A car travels down a straight road at 35 mph. It slows to a stop at a stoplight. Which of the following changes about the motion of the car?
A. speed
B. direction
C. speed and direction
D. direction and position
A. speed
Erosion and weathering are different processes that involve some of the same causes, such as wind, water, and ice. How is erosion different from weathering?
A. Erosion is slower than weathering.
B. Erosion always occurs at the same speed as weathering.
C. Erosion breaks rocks and weathering moves rocks.
D. Erosion moves rocks and weathering breaks rocks.
C. Erosion breaks rocks and weathering moves rocks.
Madison hits a drum with a drumstick and makes it vibrate. Then she rests her hand on the drum and stops the vibration. What happens to the sound of the drum?
A. The sound stops because the vibrations have stopped.
B. The sound stops because it cannot pass through her hand.
C. The sound becomes clearer because the vibrations have stopped.
D. The sound decreases in pitch because the vibrations have stopped.
A. The sound stops because the vibrations have stopped.
Matt noticed that when his dad cooked hot soup on the stove, he always stirred the pot with a certain spoon. The spoon was metal, but it had plastic covering its handle.
Which is the best reason a metal spoon used for stirring hot soup would have plastic covering its handle?
A. to allow heat from the hand to cool the soup
B. to keep heat from the hand from cooling the soup C. to allow the handle to transfer heat to a person's hand
D. to keep the handle from transferring heat to a person's hand
D. to keep the handle from transferring heat to a person's hand
A physical change is a change that does not cause a new substance to form. Which is an example of a physical change?
A. a nail rusting
B. a glass breaking
C. a dead plant rotting
D. a candle wick burning
B. a glass breaking
Theo creates an experiment in which he rolls toy cars down a ramp and records the time and distance they travel. He computes their speed and compares the average speeds of the cars.
Which method is the least accurate way to communicate the results of his experiment?
A. a list of the average speeds
B. a picture of the cars and the ramp
C. a table of the cars and average speeds
D. a graph of the cars and average speeds
B. a picture of the cars and the ramp
Sheila is classifying the rocks in her collection. She knows that limestone often contains fossils. In which category should she classify these rocks?
A. Granite
B. Igneous
C. Sedimentary
D. Metamorphic
C. Sedimentary
Earth spins at a very constant and regular speed. How long does it take for Earth to make one complete rotation?
A. 24 hours
B. 24 days
C. 365 hours
D. 365 days
A. 24 hours
Some students are testing which materials make the best insulators. The students fill plastic, foam, and paper cups with heated water. How will they gather evidence to see which cup makes the best insulator?
A. Measure the volume of the water.
B. Set up a control for the experiment.
C. Measure the temperature of the water.
D. Make a prediction about the best insulator.
C. Measure the temperature of the water.
Elise helps her teacher create a bulletin board showing different types of physical changes. The bulletin board has a folded piece of paper, a beach ball filled partly with air, and a piece of torn cloth. Which of the following could Elise add the bulletin board to show another type of physical change?
A. a piece of burnt paper
B. a picture of melting ice
C. a picture of baked cookies
D. a piece of wire that has rusted
B. a picture of melting ice
Danny kicks a soccer ball. What will most likely happen to the speed of the soccer ball?
A. It will stay the same.
B. It will slowly decrease.
C. It will increase, then decrease.
D. It will decrease, then increase.
C. It will increase, then decrease.
Derrick is examining a piece of obsidian with a hand lens. He knows that igneous rock has many properties. Which is a property of igneous rock?
A. It is always very soft.
B. It is always formed when molten rock cools.
C. It is made of crushed animal shells, bone and teeth.
D. It forms when heat and pressure change other rocks.
B. It is always formed when molten rock cools.
How could you increase the pitch of a sound produced by an object?
A. Make the object vibrate faster.
B. Make the object vibrate slower.
C. Make the object vibrate louder.
D. Make the object vibrate quieter.
A. Make the object vibrate faster.