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Q 1/35
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The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach. Which arrow shows convection?
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Q 2/35
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The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach. Which arrow(s) shows conduction?
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35 questions
Q.
The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach. Which arrow shows convection?
1
120 sec
Q.
The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach. Which arrow(s) shows conduction?
2
120 sec
Q.
The arrows in the picture below show several ways heat is transferred from the Sun as it strikes sand on the surface of a beach. Which arrow shows radiation?
3
120 sec
Q.
If you visit the beach on a hot summer day you will probably feel a sea breeze coming off the water onto the land.
Which of the following causes this sea breeze?
4
120 sec
Q.
If you walk barefoot on hot asphalt, energy is transferred by which process?
5
120 sec
Q.
When energy from the sun reaches the air above land, the air warms and rises. Along a coastline, cooler air above the ocean flows toward the land to replace this rising air.
Which of the following best describe these processes?
6
120 sec
Q.
Vivian placed an ice cube in a tray of warm water. The following picture shows her investigation.
Which statement describes the energy transfer that happens in Vivian’s investigation?
7
120 sec
Q.
Kumar is studying how Earth is warmed by sunlight. The following illustration shows his model of the sun and Earth.
Which process is mostly responsible for warming the soil in Kumar’s model?
8
120 sec
Q.
Paul placed an ice cube into a beaker on a hot plate. The ice cube changed from a solid to a liquid and then to a gas.
During this process, which property of the ice cube remained unchanged?
9
120 sec
Q.
When a helium balloon rises in the air, it expands.
If the volume of the balloon doubles, what happens to the density of the helium inside it?
10
120 sec
Q.
A metal coin has certain properties that can be measured.
Which property of a coin is different on the moon than it is on Earth?
11
120 sec
Q.
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table.
Why are these elements in the same column in the periodic table?
12
120 sec
Q.
How many atoms in total and what atoms combine to make up a molecule of hydrogen peroxide (H2O2)?
13
120 sec
Q.
All of the following would be helpful in separating a mixture of sand and salt EXCEPT
14
120 sec
Q.
Raul and Bonnie are trying to classify several objects that they found during a field trip to the beach. They collected a sample of seawater, a piece of driftwood, and several smooth pebbles.
What property does the driftwood share with the pebbles that it does not share with the water?
15
120 sec
Q.
Some properties, such as mass, depend on how much matter is present. Other properties, such as malleability, remain the same no matter how much matter is present.
Which of these choices is a physical property of the element potassium that remains the same no matter how much matter is present?
16
120 sec
Q.
The chart below shows the atomic numbers and mass numbers for two elements. Element 2 has a greater atomic number and mass number than element 1.
How many more neutrons does element 2 have than element 1?
17
120 sec
Q.
Which statement is TRUE about the element represented in the picture?
18
120 sec
Q.
Ted wants to know the average atomic mass of calcium. He knows that the letters Ca stand for calcium. He found the entry for calcium, Ca, in Period 4 of the periodic table. The diagram below shows this entry.
Which of the following numbers should Ted identify as the average atomic mass of calcium, Ca?
19
120 sec
Q.
Carbon has an atomic number of 6.
Which of the following does the atomic number 6 tell you about carbon?
20
120 sec
Q.
Calcium is an element. What is the smallest particle of calcium that has the same chemical properties of calcium?
21
120 sec
Q.
The four items shown below were served at a dinner at Kim's house. Each of the items is a mixture.
Which of the mixtures is a solution?
22
120 sec
Q.
Two samples of water can have different densities.
Which of these statements would best explain this fact?
23
120 sec
Q.
Which of these substances is an example of a solution?
24
120 sec
Q.
The diagram below shows what happens during the formation of a compound. The diagram shows two substances joining together to form a third substance.
Which of these substances is a compound?
25
120 sec
Q.
Gordon adds a piece of solid zinc metal to a beaker of hydrochloric acid. He identifies the products as zinc chloride and hydrogen gas.
Which process took place in the beaker?
26
120 sec
Q.
Rita wants to make some toast for breakfast, which she knows involves a chemical change to the bread. She puts a slice of bread in the toaster, but, after 10 minutes, she notices that the sides of the bread are black.
What caused this chemical change to go too far?
27
120 sec
Q.
Trini adds 10 g of baking soda to 100 g of vinegar. The mixture begins to bubble. When the bubbling stops, Trini finds the mass of the resulting mixture. She determines its mass is 105 g.
Why has the mass changed?
28
120 sec
Q.
It is important to understand the differences between chemical and physical changes. Chemical changes result in new substances, but physical changes do not.
Which process is an example of a physical change?
29
120 sec
Q.
Alison finds the total mass of a sample of baking soda, a balloon, and a glass container with vinegar in it. She adds the baking soda to the vinegar and immediately places the balloon over the mouth of the container. After the reaction is complete, she again finds the total mass of the system.
Which statement is true about this investigation?
30
120 sec
Q.
Which of these statements is FALSE regarding the model of an atom represented in the picture?
31
120 sec
Q.
Which of these particles is the smallest?
32
120 sec
Q.
Which of the following describes how elements are arranged in the periodic table?
33
120 sec
Q.
Find chlorine and bromine in the periodic table. What is true about these two elements?
34
120 sec
Q.
What is true about the position of any metal in the periodic table?
